Blogger spam is something I noticed a month or so ago when my comments section experienced its largest single day level of interest with seven people leaving notes.
Yes, seven is not exactly a landslide, but I was pretty impressed. In addition my stat counter registered 70 or so hits, which was pretty close to a record high. I was so full of myself that I did not even closely read the comments and it wasn't until the next day that I realized they were all kind of vague and included links to sites that had nothing to do with blogging, but everything to do with selling diet pills or pushing religion.
I have to give the spam bloggers credit. They played me like a fiddle. These people knew that bloggers crave attention and would like click into their sites without paying any attention. After all if you are nice enough to leave a kind comment on my blog the least I can do is visit your site...
I guess everyone wants their 15 minutes of fame.