I am wondering about your economics. Back of the envelope: 800 usd per month (min 80 hrs of work) translates into max 10 USD hourly revenue. Does not sound like much for "expert knowledge".
I suppose there are different approaches: are you using amazon mechanical Turk (there was a recent HN post on it a few days ago)? Or are you planning to use massive scale effects (as in: build up a contact database that you can reuse)?
Could you elaborate on that?