Some spammers do not appreciate the subtle details of the Blogger anti-spam policies . Spam: Spam takes several forms in Blogger, all of which can result in deletion of your account or blog. Some examples include creating blogs designed to drive traffic to your site or to move it up in search listings, posting comments on other people's blogs just to promote your site or product, and scraping existing content from other sources for the primary purpose of generating revenue or other personal gains.
What Blogger won't tell you