Ugh, I just tried devise and tossed it out within an hour. Way too much automagic, way too difficult to use it in any way but their scaffold. Still looking for a clean way to do facebook/twitter stuff however, so I'll checkout omnisocial and omniauth.

There's no need to use a complex plugin to provide logins with Facebook/Twitter.

Use the oauth2 gem and write it by hand. My FacebookAuth controller is only 20 lines of code and it works perfectly.

I've set up fb/twitter logins in 4 different apps and have tried all the gems/plugins.

Thanks for the tip :)

We married OmniAuth with Authlogic to handle username/password (we're still on Rails 2, so no Devise for us). It wasn't too bad. Handling the validations for users was the tricky part, but Authlogic offers a ton of help in this area... way more than I expected.

I stick with devise too, but I don't understand why the oauth2 functionalty it is not on the master gem. You need to import it from github to have this.