Awesome, thanks for responding Fearless. I think I'll be purchasing soon.
Most of us are waiting on a big patch that's supposed to fix a lot of the problems with the game. If/when that patch comes I would expect multiplayer to pick up quite a bit.
But IL-2 in its heydey was much more populated than it is now. However, the ATAG server is almost always populated during East Coast prime time.
I just finished a rousing 2-hour session on the ATAG server, and when I signed off a few minutes ago (11 pm EST) there were about 30 people in the server.