Stop Spam on Community Server Blog Comments

I had a great problem with spam in my blog post comments till yesterday. When I try to review the post comments there were whole lot of spam in it. Community Sever has a built in functionality to identify spam but I could not find any for stopping them.

Captcha is a great solution for this problem. Michael has implemented a Captcha plug-in for Community Server and it works very well. Thanks Michael for sharing this solution!