Looks interesting. I like the branding, your fatness ;)
Personally I think you should focus on just one of part-time jobs/student deals, and do it really while, instead of diluting your attention. Personally I can't see myself logging on to a website to find out which pub has the cheapest pint, I just go where my friends go, though maybe other students are cheaper than me.
I think the jobs section has more legs. The 30 second video is an interesting selling point - I could see it working, but do you know if any employers actually want this?