He was associated with the site
http://mybitcointrade.com/ which is defunct now and may have been re-registered by someone else in between.
Yes, I am sure he was originally smart1985, who later changed his name to mybitcointrade.com. I remember some of his posts from 2011/2012.
Wasn't he also the guy who sent bulanula 25 BTC instead of 2.5 BTC?