Cool logos here. I like psymon's best so far.
I don't know if I have the time to make this into a proper "weathered" look, but I thought I'd share this anyway. It's the rough shape of the characters based on a pencil sketch.
[edit]Well, I spent some time trying weather it, even used some photos of glowing embers. But you know what? Simple, clean always looks best to me. It is recognizable, readable, and still has a nice combination of sharp and and curved letters. A logo should be simple right? The eye candy will come from the renders, right?
If nothing else, mine is probably the smallest svg submitted:
http://koti.welho.com/elakimein/img/sintellogo.svg