Great examples. I think even the WebKit touch events version of Google Maps is broken, but, not being a Gmail user, I had no idea they were blowing it that badly. I use both Maps and Twitter every single day, but -- and here's another facet of the problem -- always through applications. I encounter Maps embedded in (WebKit) pages only enough to be annoyed by them, and I haven't been to twitter.com in at least a year. This is eye-opening. Clearly we're not just talking about drop shadows.