I installed to Akismet this weekend, to deal with a new flood of comment spam that had been getting by mod_security and my other measures. It literally took me 15 minutes to install, thanks to the libraries already available for it. In my case, I used the PHP5 library from Aching Brain dot Net. So far, its correctly identified potential comment spam, although I haven’t had any real comments in quite a while, since I’ve been lazy about writing. I guess, I’m asking for real comments then to help test.