For the gentlesirs out there that prefer their m'ladies with a little more chunk, Gone Wild Plus is the subreddit of choice. It claims to be Reddit's HQ when it comes to 'Karma for curves' and aims to provide its users with a place to submit and enjoy images of amateur girls that want to share their bodies with the world.
It should be made clear from the get go that /r/GoneWildPlus is 100% user submitted material - better yet, it only features those that actually submit the content. Guys regularly make requests, compliment the girls and even PM them dirty messages to further their course of enjoying girls with bigger bodies.
I'm not a huge fan of huge women myself, but I'd say that /r/GoneWildPlus is an acceptable level. I wouldn't describe these chicks as BBWs, just plump and classical images of reproductive perfection. It's fairly active too - 60 posts have been made in the last 24 hours.