Hi! I'm asking if there's a way to evaluate my own gameplay compared to those of others. Are there any netsites that keep track of players' kill/death -ratio or position otherwise, besides of organized leagues, of course?

I've seen some statistics in signatures for some users. Where can I get that?

you'll have to play at U13's server
then check your stats here or see when it's online:
http://dyn.u13.net:6080

I'm also trying to make a stats page with mar77a's help.

1) Try enabling File Logging and download SolStats.
2) Black Devil's project is going great, visit at http://sx4.u13.net
3) Don't steal my avatar.

http://www.csports.net tracks stats on every server for a wide variety of games

i dont think its rankings are very accurate though, but hey, it gives you a rough idea anyways