Gamecock has a *YBPDLN=Your Best Purpose Driven Life Now ping list that kind of fills that role, as least as far as pinging out threads about mega church pastors.
People could post threads about the false teachings out there in Evangelicalism, especially the Word of Faith movement, and the prosperity gospel,
There are websites which deal a lot with the likes of Hinn, Osteen, Copeland, etc...
It would be easy enough to find articles that deal with them.