While I can see both pros and cons of "unofficial" groups, one HUGE positive is that anything made public is then less easy to sweep under the rug.
In this case, I think the more eyes on the case, the better.
However, I am NOT for harassment or heckling of anyone involved. Period.
And I certainly wouldn't want anyone hurt unnecessarily, but things like criminal records are already a matter of public record. Anything piece of info that is available that can fit into this puzzle and help solve it is welcome.
I'm not saying these "sites" should be allowed here at WS, just saying they help put people on notice that many eyes are watching. There is a degree of protection in that.