One of the questions that popped up at Wobble2.0 last night was about the mobile web, and went along the lines of "given that many parts of the developing world have mobiles but no PCs, isn't the mobile web going to be a big deal there?"
To which I comment that many of the things people actually use the Internet for don't translate that well onto mobile. The web's killer ap is email - a text communications platform - and you don't need email to communicate by text from a phone because it's got SMS. Broadband's is sharing large video files over BitTorrent - not currently realistic on mobile, from either a price or bandwidth point of view. Other great web successes - social networks - are another conversation platform, and we're back to what your phone does already. And search? Sure, there's a real need there (especially when someone cracks the problem of making phone search a simple matter of pointing the phone at real-world objects and saying "what's that?") and people are working towards a solution. But lots of what people do with computers doesn't translate so well to a phone because, well, it is a phone and it does as a phone much of what the Internet does as the Internet.