Interesting… I have been using Spam Karma as my comment spam filter. SK uses a variety of classifiers and works very well for me, catching about 10 spam comments every two or three days with zero false positives and zero false negatives (well… I don’t receive so many comments, so you can achieve similar figures with a very simple rule).
As far as I know Aksimet sends all the comments to the central server. I see an advantage in it, but if one is a privacy freak…
BTW: it seems that thare is a spam karma plugin for akismet. Wonder if it makes sense…
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