Squishysquishy - One of the longer running website communities, for people into trampling, sneakers and crushing. Based in New Zealand but with members worldwide.
Foot Fraternity - Possibly the longest running foot fetish website for guys. It was one of the first sites I came across. Based in USA and mainly for feet and sock worship, but they also have some trample content.
Is there another trampling website you think I should have here? Email me here.