directwheels - 1:02 pm on May 26, 2010 (gmt 0)
A buy and sell section like Flippa would be good to have, at least for selling sites or domains. Not sure about letting people sell services.
Also, why not make a job board? Hiring good SEM/SEO talent is always a challenge for big and small companies, even in NYC. I would think we have a high concentration of talents on here that would make it worthwhile to pay $50 for a job post.