If you just want to have kartmeet for dutch LFS'ers, a simple thread should suffice.
If it's not LFS related you should make your own forum for it.
There might be or might not be some legit reasons for having groups on this forum. Anyway, usually people will just end up making tons of groups for no reason and the forum will turn in to a social networking site. If you want that, you should just go to that myface or something.