All you have to do is post a stupid little survey to Facebook and millions of idiots will fill the silly thing out giving you their mother's maiden name, street they grew up on, and last 4 digits of their social security in return for generating a few sentences of nonsense.
as a consultant that has such CAC card (no, it's not repetitive)
I believe the access too broad for this to be effective.. Although there does exist STRONG accountability within the credentialed system, no anonymous access or anything allowed on the network. This will probably work ok, but there will be much more overhead in the moderation and administration than exists even in wikipedia out publicly.
e-credibility: the non-guaranteeable likelihood that the electronic data you're seeing is genuine rather than somebody's made-up crap. - Karl Lehenbauer