On my website, I currently have a general register and login with a Facebook login as an option. The problem I have noticed is that I have more spammy users creating fake usernames and uploading non-relevant content with general registration as opposed to the Facebook users.

So I'm considering abandoning general registration and have Facebook-only sign-in with intent to add Twitter, Google+, etc, but I'm concerned this will impact/restrict my user base. Are there any references that determine what percentage of users sign up with general, Facebook, Twitter, Google+ logins and would I jeopardize my growth potential by removing general login?

  • I'm not sure if this regards UX (maybe it does to some extent, but is mostly more about databases and general learnings from projects). One of the disadvantages I know is, however, a possibility to loose connection between user in your database and Facebook user if the FB account is deleted. – Dominik Oslizlo Mar 15 '13 at 15:08
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    Thanks Dominik. I believe this is clearly a UX question. Users that dont have a Facebook account could have a bad experience as they may want to contribute content, but cannot. Good point about the lost connection - my solution to this would be to retain the username, but replace the user's profile image with a silhouette avatar. – Andrew Findlay Mar 15 '13 at 15:15
  • From this pint of view, yes, this is a limitation. However, you can use FB/G+ login as an option, linked to the user account, so that he/she can use either manually entered credentials or their FB/G+ login. Moreover, you can pull data from the FB or other account while registering, so that the newly created user account data is more adequate. We use it even here, on UX.SE. – Dominik Oslizlo Mar 15 '13 at 15:19
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    Just don't make it the only option. Not everybody likes to mix different aspects of their lives with what they do on facebook. – Marjan Venema Mar 15 '13 at 15:26

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