I have switched from Akismet to Defensio for my comment spam protection. I don’t know if this will be a permanent change. The effectiveness of Defensio will decide that.
Therefore, if you find your comment is not being displayed, it’s quite likely that Defensio has treated it as spam. Don’t worry though. All comments marked as spam are availabe to me in a list so I can go through them and decide which ones are legitimate.
Here’s to a comment spam free blog!