Simple idea: - Take the occupation and location data from the profiles - Prune out inactive accounts - Tabulate the results and add profile, 'sticky mail' and website links
I don't know about others but I would preferentially offer a contract to a valued WebmasterWorld member with demonstrated knowledge and ability who is based in my city* than to an unknown contractor found through a directory or advert.
Given the high potential value, at least to me, I would suggest that it be available to supporters only (although it should list non-supporter accounts within it).
It would not need to be a live list - a static list regenerated once a month would be more than sufficient - and would help exclude one-post wonder accounts. Although globalisation is great, sometimes you can't beat local consultants