Actually, you need to register AND fill a joining application. Then you have to keep visiting your application to answer questions and banter with the Unrepentant members until you are accepted or rejected. Unrepentant isn't just a fleet for STO, it is a gaming group with branches in many games.
The entire process is designed to make sure the rest of the group that doesn't play STO gets to know you, to test your commitment to join us, to prove that you can actually interact with others socially and to ensure that you are not a complete and utter jerk. And it works very well, we barely have any drama, at all.
Its not that big a deal... you wouldn't want a bunch of idiots joining into your group, would you? Thats why we do this... weed out the idiots, and end up with the people who fit in. If you don't want to talk to us, have a nice day.