1. If you are looking for a freelancer, list the three most important needs you are looking to solve with a freelancer. I think we can all get so caught up in listing everything we think we need, that we forget the few things that are actually important to get the job done. Once we take a hard look at what we need, and match it up with #2, I think we can go along way to meeting expectations on both sides.
2. If you are a freelancer, list the three areas you are strongest. Are you amazing with game mechanics? Do you have a track record of successful social media campaigns? If all we list is our technical abilities, then HN who's hiring just becomes another place for outsourced development. Lets be better than that, and show our domain expertise.