lol darKz, thanks for that
Here's the thing, whatever number I set as limit, people will fill/max that out. There were times on TUS which everybody had zero or one community. In time people got used to the concept of the communities and enjoyed staying in them. If I set this number to 3, people will max that out too.
Current TUS can't have more than 2 communities. However in TUS2 (which will be released this month if no one dies!) there's no limit but a lock has been set by default which again limits you to max 2 communities.
TUS gathers stats about member groups by their played competitive games, joined cups, tournaments or challenges or any possible log it could gather. Having more and more communities, meaning more stats/logging job for TUS.
That's why I'm not planning to unlock this limit even in TUS2 except there are good reasons for that. Possible reasons could be setting up a encouragement points system and sell one community slot per 100 pts or even sell community slots for real that helps TUS server.