I think it is worth mentioning something about mobility access to resources: companies still don't grasp the concept. Mobility, and on top of that usability, are not being implemented by companies that should know better: the ones distributing content.
An example is this website that I tried to access on my Pocket PC just to be told off:
"The majority of our audience uses a standards-compliant web browser, but you appear not to be using one. We want to help you remedy this situation and improve your experience with [...] and the rest of the internet".
And the Guardians of The Internet tell me it's not compatible, or is it because web designers don't know about usability and know even less about mobility?
Another example is an experience reported on Smartphone Thoughts, where Editor Mike Temporale tries to download a program for Windows Mobile directly into his device, a C500 Windows Mobile Smartphone.
Even though both websites he visited are targeting the mobile devices audience, he couldn't successfully download a simple program. According to his reports, even the "mobile version" of said sites are bloated, full of unnecessary images and don't have installers that will run directly on Windows Mobile devices
"In todays world of mobility, we should all be able to pull out our Smartphones, dial in a mobile software site and download the latest and greatest game, PIM tool, utility, or whatever suits your fancy. That seems like a reasonable level of expectation, right? Well, apparently that's asking too much. Recently I attempted just such a thing with the two largest online retailers of software for Windows Mobile Smartphones. I was just looking to download the trial version of a new application. I knew the application was listed on both sites, and was available for download in a CAB format".
Still a long way to go for consumer mobility, I say.