Second, don't raise w/ hand from middle or late position if there has been more than 3 limpers. All you're going to do is create a monster pot and encourage people to run you down. Don't raise even w/ AK.
This is some of the worst advice I have seen at FTR lately. I have to write this opinion so someone doesn't see this garbage and actually believe it.

Raise AK for value and isolation. There's a pretty good chance you have the best hand at the moment and you don't want to let the blinds in cheap with garbage.