Many thanks for running xcomufo.com all these years! It has always been one of the best web resources for the xcom community.
With the risk of sounding corny... On the subject of thanking people (though off topic), I actually want to thank you Serge, for developing UFO2K. When I came here in 2005, I was a complete newbie that wanted to program in C++...I was 15 (21 now). I'm actually amazed you didn't end up getting frustrated with this fact, as I hardly did anything worthwhile for UFO2K. Your development force really inspired me and is what brought me here in the first place. I think if I didn't stumble upon UFO2K, I would have actually not been interested in game development as much as I am today, and progressed. I didn't know what I wanted to do with my life, and I can't help but feel the community here drove me to where I am today. I met a lot of really cool people here, and very resourceful ones at that!
I even taken up pixel art, (which honestly, I started from crappy UFO2K add-on art), drawing in general, vector art, and some general graphic and web design art (ooh shiny buttons!). I think this was my most significant growth and influence from UFO2K, since my first real work was from a Syndicate weapon set mod for it.
UFO2K led me to Fallen (a space browser game spin off from Pardus's [pardus.at])
Fallen led me to learning Blender (3D modelling) and PHP somewhat.
Fallen's demise led me to find BYOND game engine. Which led to a lot of goofing off (I don't even bother playing games these days) playing retro multiplayer online fan games...but it did lead me to pixel art further.
I went from one indie game to another, yet I learned a lot from my newbie mistakes and grew from them. I don't think projects and their demise entails only the demise itself, but a learning experience to why they died. Which is why I'm glad to see UFO2K's forums still there for some history.