Bartman & Mr Cool - sorry to hear of your experiences with the contractor section of the site. I know of many firms who are thrilled with this contractor area and the contractors they are able to find by advertising here. There's also a significant number of readers who are regular repeat subscribers (and as you know the service doesn't auto-renew). So lots of contract assignments are filled this way.
On the flip side, it is certainly true to say that by making it free to post on the site (so that budget never stands in the way of us bringing you the opportunities), there are often recruiters who leave their adverts live beyond the date at which they've found the contractor they needed. We police this and remove older adverts ourselves, but clearly them not having to pay for adverts to remain on the site does make this problem worse.
It's also fair to say that at any point in time there are 100-200 openings but thousands of contractors subscribed to the service - and recruiters often only respond to those candidates they are interested in seeing rather than to everyone who applies.
I can't contest your experiences and have no doubt they are valid - but equally I would like to convey that contractor assignments are filled via this service and we have a team here proactively out in the market uncovering new contract opportunities that organisations are looking to fill.