I don’t think the news about AOL buying Mailblocks and its challenge response anti-spam product is such a big deal in the grand scheme of things. But it does give me a quick opportunity to rant against challenge/response. First, I don’t think the world is in danger of mass adoption of challenge/response. Earthlink, which in general has much more sophisticated customers than does AOL, has had a hard time gettings its adoption level of this up to the 7-10% level over a period of at least two years. I think it will be even tougher for AOL. I applaud AOL for trying to do more to help members fight spam, but I don’t think this is the answer. So onto…