Comment Spam Extortion

An interesting new kind of comment spam showed up in our moderation queue today:

Author : Anikrichard (IP: [redacted] , [redacted].com)
E-mail : [redacted]@mail.ru
Comment:
hello , my name is Richard and I know you get a lot of spammy comments ,
I can help you with this problem . I know a lot of spammers and I will ask them not to post on your site. It will reduce the volume of spam by 30-50% .In return Id like to ask you to put a link to my site on the index page of your site. The link will be small and your visitors will hardly notice it , its just done for higher rankings in search engines. Contact me icq [redacted] or write me [redacted](at)yahoo.com , i will give you my site url and you will give me yours if you are interested. thank you