buckworks - 1:09 pm on Mar 16, 2012 (gmt 0)
The goofiest example of this I ever encountered was having an ad rejected when it was the manufacturer promoting his own product!
Those automated trademark rejections can be appealed in situations where they don't apply.
Suppose the system rejected your ad because it contained the word "apple" which is trademarked. If you were promoting something like "apple pie recipes" that's a usage where the trademark wouldn't apply, and your ad would (probably) be accepted on manual review.