I run a few WP sites and have tried several spam and security plugins. This one saved my bum. In the span of 1 year I had 2 people associated with my sites in viral news. (this can happen to you too!) One was a member of a non-profit group, and the other a friend I barter services with. The attacks from viral new stories can be relentless & frustrating, but after the first round I installed this plug in and it solved all my issues. The second I loaded this plug in imminently and I had no issues. I just loaded it on my personal multi site install and it works wonderfully. The developer updates often and the plug in is easy to use. I would give 6 stars if I could.