Here are places you can go to congregate with fellow NES enthusiasts. The ones I use will have a "*" by them. To the right is the activeness on a scale of 1 to 3, 3 being the busiest.
Message Boards The NES Message Board of NESescity*
3 NESfan Message Forums
3 NES World Message Board
2 Gamefaqs.com's NES Message Board 2 Chat Rooms #nes on austnet*
Get an IRC program and connect to any austnet server (type /server us.austnet.org) and enter #nes (/join #nes)
3 #nes on espernet
(/server dream.esper.net, everything else same as above)