I have to say i agree totally with Paulb.

It's a fantastic script, very good idea...
but i registered, and searched for a job - found one, but there was no button to place a bid... so i clicked around, and i appeared to be logged in - but then i clicked on somthing, and i got a log in form, in which i put in my username and password - and it didn't appear to do anything, the page just refreshed?

So i've had to create another username now, and it seems to be working okay...

I think this could put off a few buyers who aren't as advanced on the internet as other users... and could confuse them - it confused me - and i wouldn't call myself a novice.

But top marks on the main concept, exellent!