LisaSTL Wrote:
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> I think people Google shopping or something to
> that effect and end up here. Then they just post
> their crapola and go away
No, it's the equivalent of physical junk mail.  Direct e-tailers have automated programs that will troll various message boards/social sites for repeated use of certain keywords tied to their targeted demographics.  When they come upon a site that meets some of their criteria, they will either have automated bots register and start spam posting, or hire somebody in Nigeria for 3 grains of rice per day to spam post.  
Watch the spam postings here.  I would bet you that the majority of them are female targeted, since there are more female MSers and there are several usernames here that have female names in them.