Best plugin for BuddyPress registration spam

I tried several plugins to block the registration spam that was flooding my BuddyPress sites. They were okay but still required work from me. CleanTalk just works beautifully. I love getting the weekly stats showing how many bots have been blocked!

I had a couple of minor issues and got great response from their support forum. They even rolled one of my issues into an update — they modified the plugin to screen the WP Front End Pro registration form I use on one of my sites. Spending $16 to protect three websites for a year was worth every penny!