How about a regular anti-cultist thread? We could point out all the false pastors leading their flocks astray.
James 4
11†Do not speak evil of one another, brethren. He who speaks evil of a brother †and judges his brother, speaks evil of the law and judges the law. But if you judge the law, you are not a doer of the law but a judge. 12There is one Lawgiver, †who is able to save and to destroy. †Who are you to judge another?
Nelson, Thomas (2009-02-18). Holy Bible, New King James Version (NKJV) (p. 1171). Thomas Nelson. Kindle Edition.
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.