This comparison examines the privacy features, data practices, and control options across different social media platforms to help you make informed decisions about where and how you share information online.
| Platform | Private Account Option | Content Visibility Controls | Audience Restriction | Blocking Capabilities | Notes |
|---|---|---|---|---|---|
| Bluesky | Limited | Can control who can reply to posts | No private mode | Block users | Decentralized architecture affects privacy |
| Yes | Granular post-level privacy | Friend lists, groups | Block, restrict, unfollow | Complex but comprehensive controls | |
| GitHub | Yes (paid) | Public/private repositories | Organization permissions | Block users | Code-focused with different privacy concerns |
| Yes | Close Friends for Stories | Restrict accounts | Block, restrict, mute | Strong private account option | |
| Yes | Granular connection visibility | Control who sees activity | Block and restrict | Professional focus affects privacy needs | |
| Mastodon | Yes (instance-dependent) | Post visibility options | Follower-only content | Block, mute, filter | Instance-based privacy varies |
| Limited | Secret boards option | Board-specific controls | Block users | Content-focused rather than account-focused | |
| No (accounts only) | Can hide post history | Private communities | Block users | Pseudonymity rather than privacy | |
| Snapchat | Yes (by design) | Custom friend lists | Private Stories | Block users | Ephemeral design enhances privacy |
| Telegram | Yes | Secret chats with E2E encryption | Group/channel controls | Block users | Strong privacy features available |
| TikTok | Yes | Friends-only option | Comment filtering | Block, restrict | Growing but still limited controls |
| Twitch | No | Subscriber-only chat | Follower-only mode | Block, ban, timeout | Public broadcast with chat controls |
| VK | Yes | Granular privacy settings | Friend lists | Block users | Similar to Facebook but different defaults |
| X (formerly Twitter) | Yes | Can limit who replies to posts | Protected posts option | Block and mute users | Can limit who can tag you |
| YouTube | Limited | Unlisted and private videos | Comment controls | Block users | Channel rather than account privacy |
| Platform | Data Collected | Advertising Model | Third-Party Sharing | Data Retention | User Control Options |
|---|---|---|---|---|---|
| Bluesky | Moderate | Limited advertising | Limited | Data portable by design | Decentralized offers more control |
| Extensive | Highly targeted ads | API access, partners | Indefinite unless deleted | Limited opt-outs available | |
| GitHub | Moderate | Limited advertising | Microsoft ecosystem | Repository data permanent unless deleted | More control over visible data |
| Extensive | Highly targeted ads | Meta ecosystem, partners | Indefinite unless deleted | Limited opt-outs available | |
| Extensive | Targeted professional ads | Microsoft ecosystem, partners | Indefinite unless deleted | Some opt-out options | |
| Mastodon | Minimal | No advertising | Instance-dependent | Instance-dependent | High control due to federation |
| Moderate | Interest-based ads | Partners, advertisers | Indefinite unless deleted | Some opt-out options | |
| Moderate | Interest-based ads | Limited API access | Indefinite unless deleted | Some opt-out options | |
| Snapchat | Extensive | Targeted ads | Partners, advertisers | Ephemeral by design for content | Limited opt-out options |
| Telegram | Limited | No ads in chats | Limited | Cloud-based unless using Secret Chats | Strong privacy options available |
| TikTok | Very extensive | Highly targeted ads | Partners, possibly government | Indefinite unless deleted | Limited opt-out options |
| Twitch | Moderate | Targeted ads | Amazon ecosystem | Broadcast recordings saved if enabled | Limited opt-out options |
| VK | Extensive | Targeted ads | Partners, government access | Indefinite unless deleted | Limited opt-out options |
| X (formerly Twitter) | Extensive | Targeted ads | API access, partners | Indefinite unless deleted | Limited opt-outs available |
| YouTube | Extensive | Targeted ads | Google ecosystem | Indefinite unless deleted | Some opt-out options |
| Platform | Default Content Lifespan | Deletion Effectiveness | Archive/Download Options | Content Ownership | Reuse Policies |
|---|---|---|---|---|---|
| Bluesky | Permanent | Deletion requests honored | Data portability by design | User retains rights | Limited reuse |
| Permanent | Deletion requests honored but cached copies may exist | Account data export | User retains rights, platform gets license | Content may be used for AI training | |
| GitHub | Permanent unless deleted | Repository history remains in forks | Repository cloning | Depends on repository license | Public code may be viewed and forked |
| Permanent | Deletion requests honored but cached copies may exist | Account data export | User retains rights, platform gets license | Content may be used for AI training | |
| Permanent | Deletion requests honored but cached copies may exist | Account data export | User retains rights, platform gets license | Content may be used for AI training | |
| Mastodon | Instance-dependent | Varies by instance | Data export available | User retains rights | Limited reuse |
| Permanent | Deletion requests honored | Limited export options | User retains rights, platform gets license | Content may be used for recommendations | |
| Permanent | Deleted posts may remain in archives | Limited export options | User retains rights, platform gets license | Content may be used for AI training | |
| Snapchat | 24 hours (Stories), once viewed (Snaps) | Designed to delete after viewing | Memories feature for saving | User retains rights, platform gets license | Limited content reuse |
| Telegram | Permanent unless deleted | Secret Chats designed to delete | Chat export option | User retains rights | Limited content reuse |
| TikTok | Permanent | Deletion requests honored but cached copies may exist | Limited data export | User retains rights, platform gets license | Content may be used for AI training |
| Twitch | Temporary unless saved | VODs deleted after set period unless saved | VOD export for creators | User retains rights, platform gets license | Content may be used for recommendations |
| VK | Permanent | Deletion requests honored but cached copies may exist | Limited data export | User retains rights, platform gets license | Content may be used for recommendations |
| X (formerly Twitter) | Permanent | Deletion requests honored but cached copies may exist | Account archive available | User retains rights, platform gets license | Content may be used for AI training |
| YouTube | Permanent unless deleted | Deletion requests honored but cached copies may exist | Content download for creators | User retains rights, platform gets license | Content may be used for recommendations |
| Platform | 2FA Options | Login Alert System | Session Management | API Security | Security History |
|---|---|---|---|---|---|
| Bluesky | Limited | Limited | Basic | Early development | New platform, limited history |
| SMS, App, Security key | Yes | Comprehensive | OAuth | Multiple incidents historically | |
| GitHub | SMS, App, Security key | Yes | Active sessions viewable | OAuth, tokens | Strong security record |
| SMS, App | Yes | Active sessions viewable | OAuth | Some incidents as part of Meta | |
| SMS, App | Yes | Active sessions viewable | OAuth | Some breaches historically | |
| Mastodon | Instance-dependent | Instance-dependent | Basic | OAuth | Generally strong record |
| SMS, App | Limited | Basic | OAuth | Few reported incidents | |
| SMS, App | Limited | Basic | OAuth | Some incidents historically | |
| Snapchat | SMS, App | Yes | Active sessions viewable | Limited API | Some incidents historically |
| Telegram | SMS, App, Password | Yes | Active sessions viewable | Bot API | Strong security focus |
| TikTok | SMS, App | Limited | Basic | Limited API | Concerns about data practices |
| Twitch | SMS, App | Yes | Active sessions viewable | OAuth | Some incidents historically |
| VK | SMS, App | Yes | Active sessions viewable | OAuth | Government access concerns |
| X (formerly Twitter) | SMS, App, Security key | Yes | Active sessions viewable | OAuth | Multiple breaches historically |
| YouTube | SMS, App, Security key (Google) | Yes | Active sessions viewable | OAuth | Part of Google security ecosystem |
| Platform | Real Name Required | Pseudonym Friendly | Identity Verification | Profile Information Required | Notes |
|---|---|---|---|---|---|
| Bluesky | No | Yes | No formal verification | Minimal | Supports pseudonymous usage |
| Yes (policy) | No (policy) | ID verification available | Substantial | Real name policy enforced | |
| GitHub | No | Yes | No formal verification | Minimal | Common to use real name for professional reasons |
| No | Yes | Optional verification | Minimal | Verification limited to notable accounts | |
| Yes (expected) | No | No formal verification | Substantial | Professional identity focused | |
| Mastodon | No | Yes | Instance-dependent | Minimal | Strong support for pseudonymity |
| No | Yes | No formal verification | Minimal | Content focus over identity | |
| No | Yes | No formal verification | None | Designed for pseudonymous usage | |
| Snapchat | No | Yes | No formal verification | Minimal | Common to use real identity with close friends |
| Telegram | No | Yes | No formal verification | Phone number | Supports pseudonymous usage |
| TikTok | No | Yes | Limited verification | Minimal | Creator verification available |
| Twitch | No | Yes | Partner verification | Minimal | Many users use gaming handles |
| VK | Yes (policy) | Limited | Phone verification | Substantial | Similar to Facebook’s approach |
| X (formerly Twitter) | No | Yes | Optional verification | Minimal | Supports anonymous usage |
| YouTube | No (but tied to Google) | Yes | Limited verification | Minimal | Channel name can differ from Google account |
| Platform | Overall Privacy Rating | Transparency Rating | Control Rating | Data Minimization | Major Privacy Concerns |
|---|---|---|---|---|---|
| Bluesky | Moderate-High | Moderate-High | High | Moderate | New platform, evolving practices |
| Low | Moderate | Moderate | Very Low | Extensive data collection, tracking | |
| GitHub | Moderate-High | High | High | Moderate | Public code visibility, Microsoft ownership |
| Low | Moderate | Moderate | Very Low | Extensive data collection, Meta ownership | |
| Moderate | Moderate | Moderate | Low | Professional data mining, Microsoft integration | |
| Mastodon | High | High | High | High | Instance-dependent practices |
| Moderate | Moderate | Moderate | Moderate | Interest-based profiling | |
| Moderate | Moderate | Moderate | Moderate | Pseudonymity but extensive tracking | |
| Snapchat | Moderate | Moderate | Moderate-High | Moderate | Ephemeral design but data collection |
| Telegram | High | High | High | High | Strong privacy features if used correctly |
| TikTok | Very Low | Low | Low | Very Low | Extensive data collection, ownership concerns |
| Twitch | Moderate | Moderate | Moderate | Low | Amazon ownership, streaming privacy risks |
| VK | Low | Low | Moderate | Low | Government access, data collection |
| X (formerly Twitter) | Moderate | Moderate | Moderate | Low | Extensive data collection, AI training usage |
| YouTube | Low | Moderate | Moderate | Very Low | Google ecosystem integration, extensive tracking |
Regardless of which platforms you use, consider these universal privacy best practices: