So basically they are asking people to build them an algorithm that will be a critical part of their business, in exchange for a free service that will be based on this algorithm. Right...
The prize is that we'll use your algorithm to validate any matches that you go on. If that doesn't seem worthwhile to you, feel free to pass on this contest.
EDIT: ah fuck it might hack on this dataset anyways--if i get a beer and a date out of it ill help fiddle while rome burns