I find it odd that there is so much enthusiasm for this idea in the comments on Sivers' blog because to me it seems a bit outdated.<p>And I agree w/ coffee and sabat that sure, anyone can purchase and setup a bunch of niche sites w/ individual domain names, but gaining trust (both from SEs and from consumers) is the key factor and isn't easy. Google and other search engines won't index these sites well off the bat based on the domains and tailored but not_that_meaningful content. Maybe in the past that was true but certainly the SE ranking logic is smarter than that now.<p>The other area of trust would need to come from consumers. I know personally, if I was into brazilian funk, stumbled onto a machine-generated site like Sivers describes and find an album that I'm interested in buying, I would just look up that album at Amazon (or CDBaby) because I trust them. And that cycles back to the first point in that since places like CDBaby and Amazon have the authority, the index of brazilian funk results in the SEs are going to include these sites. So setting up these niche sites might make sense for sites w/ authority already, but if they already have authority why bother?