I'm running vB 3.6.12 on a big board. Users who don't meet a certain criteria get their posts tested against Akismet. Works like a charm. It catches most (if not all) of the spam on our forums and very few good posts get labeled as spam Lately I've been testing xF non stop and you need to work on this. We don't care about spam removal tools as much as spam not being posted on our forum in the first place. reCAPTCHA does nothing for us btw.