What I like about the tool is it has combined both jobs and resumes in an easy to use interface, while not the first to do this but probably the easiest to navigate. Also I can get an RSS feed of either jobs OR RESUMES, this I think is a first.
Another very nice feature is the LinkedIn button on the side of each job. This allow the job seeker to very quickly check their network for links into the hiring organisation. My only suggestion would be to have agency jobs check for links in not just the agency but also the hiring organisation. For example I saw an IP Telephony Product Manager role, it is with Cisco but being recruited by Hudson, when I clicked the LinkedIn button I was shown connections to Hudson not Cisco.