This is my answer to a Question on Support site for LampCMS project
What do you mean by mergin profile with facebook/twitter? Lampcms already has option for users to connect their FB and Twitter accounts so Questions can be posted to FB/Twitter at the same time you ask a question.
Also links to user's Facebook, Twitter, LinkedIn, Blogger are added to user's profile when they connect their social accounts to Lampcms account.
And of cause once connected you can login with Twitter/FB, Google, LinkedIn login.
