I'd be curious if some of these would have had more success given slightly different operating models. For example, RungJump seemed interesting, but maybe the described commercial model and the long questionnaire killed the community before having a chance to develop into a place focused on great jobs and what makes them so.

I liked the idea and saw the domain expired, so I've put a wiki at http://www.rungjump.com focusing more on what makes a job great as opposed to charging money for ideal job profiles. I'd be curious if it gets some interest in this modified form.

(PS: let me know if you want to claim the domain back)