...a really easy forum would be www.clubroadster.net

OR

www.miata.net (http://forum.miata.net)

Miata net is pretty big and people there are easily offended by simply language (I had a post removed for saying "jewed"). Also, they're pretty funny to get replies from on questions like "I noticed my tire is flat, is it OK to keep driving on it?" No shit.. they will give you multiple answers to that.