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A lot of web applications allow users to login with facebook, I think the most important benefit from a user point of view is that he/she does not need to remember another set of username/email and password for a particular site.

However, from my experience, I find that many of these websites still ask for a username/email and password to create an account on their site after I have logged in with facebook.

Creating an account this way simply allows them to link my facebook account with the account on their website so that they can take advantage of using my facebook account to advertise themselves (e.g. post messages to the wall on behalf of me).

Which one is more common according to your experience?

  1. Login with facebook > Ask for username/email and password to create an account > Done
  2. Login with facebook > Done

Does this hurt user experience so much for the first scenario? Or it has already become a common practice that most users do not consider this as something bad?

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I don't think that the question - as phrased - would be any more constructive on UX. The last paragraph (Which one do you think is more common?) lets the question down. If you can edit the question to remove that and as a UX question about the issue then it might be worth migrating. – ChrisF Mar 16 '12 at 14:31
@ChrisF♦ I have made it more constructive. Thanks. – bobo Mar 17 '12 at 1:07

closed as not constructive by Barry Mar 15 '12 at 21:43

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