There are these robots that scan the Internet looking for blogs so they can add a comment to a post. These comments are advertisements. Spam for your blog.
This nifty tool not only blocks comment spam but sends a nifty report with information about blocks…and it has a sense of humor, too!
Spam Karma Digest Report:
10 comments digested since last report (mmm, yummy!):
=+ Comment #1
Waaaay too many links: 14
URL/IP: xxx.xxx.xxx.xxx blacklisted by RBL bl.spamcop.net (127.0.0.2)
URL/IP: xxx.xxx.xxx.xxx blacklisted by RBL sbl-xbl.spamhaus.org (127.0.0.6)
Comment text: ‘I was Born In A Dumpster… You?