I played cs when beta 5 came out. I got it on a disc with a pc gamer magazine. Before that I was into TFC, so it was no surprise I became hooked on cs also.
My favourite era was between beta 6 and v1.5. After that it went downhill for me personally with 1.6. I didn't like the changes to the models and some of the gameplay - it felt like they had slowed the game down and at the time steam was quite buggy. I played 1.6 upto about 2005 and then just stopped playing as much.
I used to play on the wireplay, Barryworld, and meatyballs servers, but I also played in quite a few clans and one my clans played in a wireplay gaming tournament. I was also playing a bit of quake 3 online, unreal tournament 99 etc where I had clans and went by other nick names - so don't ask what they were, because my memory is really bad on remembering these. It's also possible I may have played with you guys here at some point.
I came back to cs a number of years later and played a bit of css, but games like tf2 and left4dead had started stealing my time more. But these days I don't play online at all anymore. I tried csgo when it came out in 2012 I think, which seemed quite promising but I could not get it into post 2013.