Nope. Blame is the debut work, followed by Blame!, and Noise was made at the same time of vol 8, 9 or 10 of Blame!. The order of works is something like this:

Blame debut
Blame!
[maybe Wolwerine snikt here?]
Noise
Biomega
Net Sphere Engineer
Digimortal (or before NSE, I'm not sure)
Abara
Biomega (it was halted while Abara was being released and was resumed in april of this year).
- Net Sphere Engineer complete with 32 volumes (ok, this one is false, but is what I want =D)

sooo.. a question from the newest newbe:
in witch order should they be read?
my background information, *ahem* i first read wolverine: snikt! (since i am a crazy wolverine fangirl) and bought all the blame! tokiopop have realised. ( soon gonna read scanlations of the rest of them ) but from now, where do i go? i am a freak about what order i read things in, and i dont wanna spoil all (what looks like to be ) the awsomest manga i am goeing to read ever. i trust you people, please help me!

There is no order. Besides Blame, Noise and Net-Sphere Engineer all the other works are non-related (Biomega probably is form the same Blame" universe, but no one is sure about it and until now it can be read independently).

Read first Blame, then Noise (or you could red it between volumes 7 and 8, and it will make a lot o sense. I've done that), and Net Sphere Engineer (only one chapter, released two years ago, the sequel of Blame, but with no continuation).