I've been tempted to put up a "Come to the CPA" thread, but I'm scared of attracting spammers, so I haven't touched it. And since 90% of their population seems to be spammers...
I think the worst was a deck thread... It went like this:
Post 1: Decklist
Post 2: Logical commentary
Post 3: The lyrics to a song from South Park
Post 4: "If you think that was spam then **** you."
Post 5: "If you think that was spam then **** you."
Etc...
Then there was the guy who put his name down as the phrase "MIGHTY HIPPO" repeated several thousand times (so it was about 30 pages long), and then posted "I hate spammers" another several thousand times, making for the longest single post in the history of the world.
Ouch. Poor MtgNews. If DG comes back, I'll offer my services as a Moderator, assuming it can be done...