I've been there for two days now. Most of the time on the BL-FBM-server, but it wasn't as I expected.
First thing I noticed on day one, doing my personal best of 1:17:26 was the worst time by far in this race. Everyone else was driving under 1:16.
Second day wasn't satisfactory either. Doing two races, the first was running normal - except that it seems people don't stay for 10 laps. Second race was like hell. In lap 3 or 4 a guy came onto the track, forced me off the facing line, finished one lap in 1:13 did another extremly fast intermediate and left. Then, when on lap 6 or so, a guy crashed me out of the race - intentionally, as I was overtaking on the long straight and suddenly he turned the car right - throwing my car into the rally-course. So pit and restart. Then someone with the nick :>D (or something very close to that) appeared tried to start a game (while the race was still in progress) and then started to crash into all the cars he found, when I wrote "you should be banned" he claimed to be the admin himself (no need to tell me he wasn't I understand that). But as there was no way to ban these ... (insert whatever you like here) all the others including me left.
So my experiences were pretty bad so far. As long as there is no admin to help in such situations, and there is no way to vote to ban people like these, there is nothing that's going to draw me back to these servers.
To be fair, I have to state that there was a pretty nice and friendly community and race on the absolute-beginners [endu] server on tuesday, so it might be more correct to say the demoserver seems to suffer from these problems.