Here's a URL that should be in everybody's spam filter: widecircles.com
Some idiot has been trying to (manually) spam for this site pretty much all of November. It doesn't faze him that his posts are deleted automatically. He registers new accounts, which are banned as soon as they start spamming - but he keeps on trying.
The spam posts themselves are coming from various IP addresses in India. He tries to spam our forums or tries to post comments, usually spouting marketing crap about how
The social bookmarking will also improve your business by boosting your page rank. Yeah, sure.
Dear spammer, you're an idiot and on your website, you openly advocate spamming. Go away.