We went to one, years ago when my OH first suggested it and we didn't know where to start. There were hospital recruiters there which I found useful to talk to for my job, but nothing relating to my OH, who is the main applicant. From what I remember it was mostly migration agents and mining companies. There were people from the department of immigration who gave us lots of information, which probably led to us choosing not to use an agent, but as the previous post said, you might be better spending your time researching online. If I had my time again, I probably wouldn't go?! Saying that, I was only thinking about a move back then and it definitely played a big part in winning me over. It was a big expo, there was a great atmosphere and we had a really good day. I walked out, really wanting to go for it, much to the relief of my OH!