I wouldn't use it.

Firstly, thankyou for using JPEG. =) Some clueless people like to use BMP, and throttle everyone else's internet connections as a result.

I don't go for the background itself that much, but I'm not sure why. I think it's because nothing is in a logical place. Have you heard of the rule of threes or whatever it's called? It might look better if you rearranged it so it mostly lines up along horizontal and vertical thirds. That was a bad explanation, so I'll elaborate if you didn't get what I mean. =)

Well, pretend the image is divided up into thirds. Like this: (cue crappy ASCII art...)

 ___________
|   |   |   |
|___|___|___|
|   |   |   |
|___|___|___|
|   |   |   |
|___|___|___|

If the elements of the image line up along those lines, it tends to look more structured. Don't ask me why, it just does. =)

It's the simpler, modern version of the Golden Rule that someone worked out a few centuries ago (I forget who, but someone's bound to jump in and tell me).

You should probably lay off the blur feature and make it more sharp. Blur is one of the most over used features in any background/banner making program. So tone down the burring and leave some stuff sharp and noticeable.