I think if you want to see Linux get a foothold, go to the cell phone, handheld, etc. market. Seems it's getting popular there thanks to people having made it run on close to everything now. I wouldn't count on Linux making any major advances as a desktop OS soon, it's still an OS made by and for programmers with little thought put into making it easy for users- Ubuntu was a nice try, but somewhere along the way they went nuts and drove the bus off a cliff.