If you want to join (Great!), then follow the instructions on the Join page.

If you have an idea relevant to this project, try to add it to the idea torrent?

If you found a bug in a beta, release candidate and definitely if in a proper release, please add it to the issue tracker?

Currently we do no longer have a forum. But we may resuscitate it if requested.

But the easiest and quickest way to inform the people behind the project, and for a quick reply is to contact the lead developer, flurdy, via his contact page.