PDAs and smartphones can browse the Web, but small screens and poor support for JavaScript and plug-ins can make browsing a cramped and unsatisfying experience. UMPCs give you a standard browser but they're still too big (and expensive) to carry all the time. Nokia's 770 Internet tablet fits - not necessarily neatly - in the middle, in terms of size, price and features. Because it's from Nokia, it's worth saying that the 770 isn't a mobile phone, although the new version of the operating...