Hmmm, I'm new here, started using a graphics tablet yesterday, started learning to draw 25 days ago (in ink). I made the deviant art page thinking it might be a place where people appreciate people's hard work, and you are a legend in concept art! I didn't even imagine there are people that basically steal other people's hard work and pass it on as their own...
Also quick question: why do chicks with big cleavages get more watchers than people with talent? I mean they got their boobs from theirs mom, it's not really a skill you develop through willful work, they just grow, it's biology... I wanted to put this question up somewhere and I happened to read your post, and it seemed fitting.
Think about it this way: you're Rembrandt and you're so appreciated that they basically steal your artwork.
What I find pathetic is someone would take artwork made by famous concept artists and pass them around as their own
Anyone that loves concept art and is up to date with different concept artists can spot this kind of stuff from miles away, and just think " This is one pitiful person that stole from Tsai". Everyone knows you mate, so no worries, although your post is justified.
You work 20-30 hours on a piece then this happens...