Unfortunately, I wasn’t able to attend the SXSW, as it looks like Mobile Web will be more prominently discussed this year. Brian Fling of Blue Flavor gave a presentation at SXSW, and here’s his blog page on the subject. He includes a link to his presentation in PDF. I just finished taking a look at it, and he makes some very good points for designers and web developers looking to make a mobile version of their website. Until mobile phone web browsers have reached the same feature set as the desktop web browsers, all the things that Brian covered in the presentation are good to adhere to.
This picture says a lot about how mobile phones and mobile PCs have overlapping features. Someday, this overlap will only get bigger.