I'm going to geek out here for a minute at the fact that Facebook made a screenshot diffing tool for testing. I've been wanting to build that very thing for a long time, but every developer I've talked to about it looks at me like I'm crazy.<p>So, am I still crazy for thinking screenshot diffing might be an effective way to verify builds?
HTML5 is not effective at the moment, but as phones become more powerful. I think it will take over. The same way the web app took over from desktop apps when personal PCs and network bandwidth improved.
Seems like no one's really struggling to scale mobile I suspect because 1) usage, although large, is less intense and 2) much less goes over the wire (usually just data, not pages).