I was at UCISA last month and one question I was asked "How scalable is Live @ Edu as I have been told that it has its limits?".....Well if this is a concern please click on the attached link below for City University New York who have deployed Live @ Edu to their 23 institutions and 260,000 students..... 

http://www.microsoft.com/casestudies/Case_Study_Detail.aspx?CaseStudyID=4000006615

Scalability box firmly ticked I believe!!!!
 
If you are interested in Live @ edu please call us on 0161 906 2233 or if you prefer email me at david.poole@salfordsoftware.co.uk