It's run by the same people who run justcause2mods.com so yes, it's as safe as it can be. As with anything on the internet, if you don't trust a program don't run it.
Yes it's safe. I have been using their site for years and the mods they pushed out for JC2 were awesome. I have tried a couple of the new ones and good work so far. Any questions feel free to ask away.
Might I suggest to keep this tread for the CH trainer and the mod talk over here: [url]www.cheathappens.com/show_board2.asp?headID=128523&titleID=20914'>Link