There are players, yes, as i write this right now, Gamespy Stats reports "501 servers, 196 players" for UT3 PC, and usually there's some 450 or so at peak houers (this is obviously not a peak houer).
But a community just under 500 players (spanding the globe) is not exactly a big community, and it has been this way since the game was launched (ok, the first month or so there where more people, but thouse quickly lost intrest and the numbers rapidly nosedived), considdering how anticipated the game was in the days before its release, the rapid decline in players paints a very clear picture of what people think of the game, and people saying "but i can still find a server!" are missing the bigger picture here..