They ran out of TLAs in 99, when they introduced NGWS. Now they're switching to 6LAs. I guess, it's a twitter influence, we're speaking acronyms now;-)  

P.S. MSSCMCN
P.P.S. Feel free to expand MSSCMCN as you wish, I already forgot what I meant, when I made up that abbreviation;-)

Microsoft are obviously quite stressed about what the "Netbook" means for them and will do what they can to "run interference". They have always wanted these devices to be pigeon-holed by size and price but as I've been saying the whole time, there's nothing wrong with having a relatively expensive MacBook Air style netbook that does nothing but provide a browser over WiFi/3G for hours on end... I'm a power user and I'd probably still get one... as my primary machine no less!