Advanced PHP / SQL Developer

Hello, The company that I work for is building a 'Pandora for events,' where users like and dislike meetings, events, and places in their area. Based on a user's preference, the backend (PHP/MySQL) then suggests other things that the person may be interested in. There are some pretty involved queries, and the programmer should be able to think outside of the box to help teach the algorithm to make smarter suggestions. We're looking for someone that can do 10 hours/week for a few weeks. The timing is very flexible... just need someone bright to help us figure out best approaches to the problems we're trying to solve. U.S. programmers only please - we'll need to spend time on the phone talking through the suggestion engine as it stands. Thanks! Dan