I'm noticing more and more than -- when people ask you to visit their Facebook page -- it's not just a personal profile....and it's not just a Page or Group either.
There seems to be some functionality that allows a person to create new "tabs" at the top of their Facebook Page and even include opt-in forms and whatnot on that screen.
Here's an example: bit.ly/bjDVTv
Is this a Facebook app? Is it an outside service?
Anyone got some thoughts on how to do this?