I added the extra security, provided by Blogger, on my comments section. People leaving comments should have to enter the text string shown in order to leave a comment.
Every comment I get is forwarded to my Email, so I get to hear from you all. Don't think you are leaving stealth comments! But lately my inbox was full of comments saying things like, "Really enjoyed your blog! Come check out mine at www.ImAnEvilSpammer.com" Usually their sites had something to sell. Got real tiring, real fast.