Wine has many mailing lists and forums. Here are the most useful ones for users:
Please don't create another English language Wine forum (except perhaps a Wine area in a popular distro's main forum).
If you know of another active Wine forum - especially a non-English one - please let us know so we can add it to the list. (Email to firstname.lastname@example.org would do.)
WineHQ has mailing lists for submitting patches, tracking Git commits, and discussing Wine. They feature a very customizable user subscription config, and can be subscribed to via WWW or by sending mail to email@example.com with a subject line of "subscribe". To unsubscribe, use a subject line of "unsubscribe password" using the password you got when you subscribed, or just use the Mailman web interface.
Note: You should be subscribed to the lists before you post to them, otherwise your posting will be treated as possible spam by the mailing list software.