I agree with you there - its the content that matters.
I wrote a scraper in Ruby to build the initial db - which worked pretty well.
I then went to mTurk to clean up, add more listings, but mTurk didn't work very well for me in this case.
I've now been experimenting with outsourcing for data curation. Even though I believe a lot in automating as much as possible, it seems to be working reasonably well so far.