You are right, it's just a logo ^^
I think that maybe I'll add some shining effects, or some more depth...
It was born as a basic anialiasing practice, so I agree, it was and it is reeeeally boring.
I was planning to make an animation like the epic games or the ubisoft logos, one day...

@the guy: you were right =P

It's still pretty boring.  If it were 3-D, or shiny, or glimmering, or rotating, it'd be much more interesting to look at.  Right now it just kinds of comes off as "meh".  For a logo it's fine, but as far as art goes it doesn't have anything going on.

hate to say I told you so :P

this is better, it should get accepted now

I see... I'll follow the suggestion Monkey 'o doom gave me, I'll use the black background and we'll see ^^

Maybe it's the use of alpha transparency... it is considered a dirty tool among pixel artists, although it is good for games. So you should use this but don't submit it.