ClipFlair Forums. Create discussion topics and get answers
btw, at forums you can subscribe per topic (threaded discussion) or per whole discussion board (there's a subscribe button) above the board title when you see its details
http://www.mono-software.com/Mono/Pages/Discussion/dtopic/udd6juLbDUWWuqEXAUNcBg/notifications/
for item [3] I had mentioned above the MonoX team have added a 12-hour delay for post edit notifications and also an option to turn them off in the system and only keep create post notifications