Yep. Frontpage Magazine (and others) covered it:
FrontPage magazine.com :: Slay the AOL Monster by Robert Locke
AOL reads its users' e-mails and censors them. Last year, it blocked the conservative e-mail journal The Federalist for several weeks. As of this writing, AOL has confirmed that they blocked it, but has refused to say why. The Federalist's publisher suspects it may have something to do with the fact that on March 9th, 2001, they quoted Ted Turner's comment to a group of CNN personnel observing Ash Wednesday with an ash mark on their foreheads: "What are you, a bunch of Jesus freaks?" AOL later lifted the blockade, but should conservatives, or any liberty-loving Americans, be doing business with a company that behaves this way in the first place?
http://www.frontpagemag.com/Articles/ReadArticle.asp?ID=2201
Yes...that was it.
Can you imagine if the tables were reversed what a Drive-By-Media hailstorm there would have been?