I have the latest WordPress with the latest BuddyPress and I really needed a Captcha system to stop all these spam bot registrations that I was constantly removing. I tried a bunch of different Captcha plugins. Some didn't work in BuddyPress, some broke my pages, others seemed to do nothing at all. But this plugin right here did the job for me. No fuss. It integrated nicely with the BuddyPress registration/etc. Has enough configuration options to rival some pay plugins. If you want to donate money, this guy deserves it. This plugin stopped the spam bot registrations almost completely and made my member management so much easier. I'm grateful for true open source developers.