I wonder if it's worth to attend MBA Fairs. I am considering the one in Madrid: http://www.accessmba.com/madrid/index.html. I saw ESADE will be there an a few other good one (IE, St.Gallen). Can you expect to learn anything you didn't already know from the school website?

Well, you can get your specific questions answered. Information not available on the websites, for instance

Also, it's a good chance to make an impression with the admissions people. Email and electronic communication is fine, but a first-hand impression goes a long way.

Most of all, though, these fairs are good if you're not sure which schools you want to apply to -- you have a chance of meeting people from a bunch of different schools, ask questions, etc.