Since we have introduced FB connect to our web page, we have noticed that users became confused a lot and a significant number of users began to have multiple accounts.
After they log in somehow (via FB or casual mail login) we used to show a page that asks them to connect their accounts. It is easy when they logged in via e-mail. We simply ask them to connect with FB.
I am quite confused how to handle those logged in with FB and have an existing (e-mail) account.
Do you have any suggestions or comments?