I just discovered a mahjong site -- http://mahjongtime.net/ . For sure this is the best online mahjong in English. They have “Demo”, tutorials, Chinese Official & Hong Kong Rules . The game interface is easy to use. It is fun to play.
Hello I to play at mahjongtime. i found one new site on the mahjong denmerk assosiation.
http://www.dragonkong.com/
Nice software and you can play Chinese mahjong and also riichi japanese mahjong and also classic mahjong. Not so much traffik right now but sometimes when you log in there are many players. many tournament mahjongs.