Quake3World

Hey guys... I asked a similar question a couple months ago. However this time around I'm wondering what are the most popular games to map for? Meaning, what games have the largest mapping communities and resources, etc. etc.

Would I be to far off if I were to guess; CounterStrike:Source, Battlefield 2, and Unreal2004? Are there some that I'm missing?

Thanks.

CSS, HL2.
If you count how many that makes maps for these games, other games is like "oh I can map for these too"

I guess UT2004 and CS 1.6 is pretty popular as well.