Have you purchased student airfare tickets? And have you lived in a hostel?

Thanks to pixiequeen12 for mentioning studentuniverse , a site which caters to selling cheaper airfares to college students. I noticed they also offer hostel accommodations for your destination. My question is whether you have ever used this site (or any such student based site) and what was your experience? Also, have you ever lived in a hostel and what was your experience for that. I think of a hostel like a dormitory, am I close?