Wiki is anything but credible. At one time, it might have been, but it has outgrown its usefulness.
There's been several instances of people planting false info to smear targets, you have nolife clowns who undo any changes because they don't agree with you, and there are outright vandals.
Site admins are difficult to contact, and worse, the vandalism reporting options are slow, overly complicated, and not sufficient to resolve disputes.
It's a nice project in theory, but a database that anyone can edit leaves the integrity of information highly suspicious. If Wiki wants to be taken seriously, they need to create a board of editors of some sort to oversee the project.