I may have mentioned it before, but I've received cold calls* from something called Bookwhirl.com, which claims to do marketing for independently published works, but appears to be an Asian-based scam site. Their "services" start at about $800 and appear to consist entirely of spam emails. A quick Google search fails to turn up a single positive mention of this company. Writer beware, indeed.
*Very poor connection, difficult to understand, and seeming to originate from some offshore site though they claim to be based in Wisconsin.