If your company is trying to purchase an ad on Facebook, check to see if your company name is blocked. This post on TechCrunch reveals that any ads containing 4-letter words are automatically blocked. That means that companies like 3Jam, eBay, and others are blocked from buying ads. Names of other companies that are viewed as “competitors” are blocked as well. Some of these companies include MySpace, the Brazilian social networking site Orkut, Hi5, and Friendster.

I’m interested to see what other companies out there are potentially viewed as competitors by Facebook.