We wanted to prevent automated bots from sending too many queries at once - that's why we kept the social login. If you are still concerned, you could authenticate with a fake Twitter or FB account or revoke the permissions after trying it out.
I too never use my facebook or twitter logins for anything unless it's absolutely critical.
It sounds like it could be fun otherwise.
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- See who you follow, and follow new people.
- Update your profile.
- Post Tweets for you.