I find that people who have no familiarity with AOL don't have a clue how it works. For a start, it has it own inbuilt mail service. Secondly, while it uses Internet Express technology, it does not use the full, standard IE. Even when installing standard IE, there is "special artwork support for AOL."
Although 30 million people can probably be wrong, I use AOL out of choice because of its simple installation, much better laid out email system and, because it functions separately from either Internet Explorer or Outlook Express, is much less vulnerable to viruses.
I have never encountered any form of censorship with AOL, which is why I suggest the problem was perhaps morely likely caused by AOL's different setup to other ISPs.