If they just do the same thing over again? Good reason or not, I personally have an issue with them coming in and duplicating something I know a lot of time and effort has gone into without so much as a nod at the original.

Er, yeah, pretty much where I stand as well, as someone who's put a lot of time and work into the FanHistory wiki at this point and not inclined to repeat those efforts just for the sake of repeating myself elsewhere.