If you've been wondering why there are now only a few servers in the list of games, don't panic! This isn't a ploy by Epic to make you think UT is dead... well, actually it might be but, anyway, there is a fix.
In your
UnrealTournament.ini find the
[UBrowserAll] section, and locate:
bHidden=True
bFallbackFactories=True
Change both these values to
False and you should see all the servers again.