And here is an introduction to Linux in the classroom, with some interesting notes and comparisons of proprietary software compared with linux. And another interesting article about the exploding use of linux in Small and Medium sized Businesses (SMB) And here in Toronto, a company is using linux for POS (Point of Sale) in a big way. And a library using Koha,(koha.org) at U of T for child research, etc., in addition to the previous posts about libraries using userful.com, etc.