It could be due to the retina display. iPhone4 has double the resolution of 3GS. Drawing 960x640 pixels vs 480x320 in canvas is going to have some noticeable impact.
While it's probably not exactly what you're looking for, Safari's Snippet Editor is great for whipping up some quick HTML with auto preview. Accessible via the menu, Develop > Show Snippet Editor.
Why? He's clearly so happy with TextMate that he's willing to fork over more money for version 2 voluntarily. That doesn't sound like someone who's in need of a new editor.
They are, to a small extent. They look like plain text, but if an item wraps across lines, the indent level is preserved. Note: blockquotes and code blocks should do the same thing, but it hasn't been implemented yet.
You're assuming that your static assets (js, css, images) aren't served from a CDN (pretty much the standard at companies like Yahoo!). When your main server is serving just the HTML it's much more likely that your requests could double.
Any website serving its assets from a CDN will be a) unlikely to make a mistake like this empty image src thing, and b) have a well-cached front-page that would be unlikely to impact on server load.
Maybe. It's still a bit alarmist though. For 99% of sites, it will barely have an effect. Best practices for websites serving millions of pages a day truly are different than for websites serving thousands of pages a day. They are also different for web apps versus largely static pages. There is too much emphasis on absolutes in the web development community.
Welcome improvements, for sure. I've been using WebKit (Safari, specifically) as my main development browser after abandoning FF some weeks ago and these additions address many of my migration annoyances. RGB colors and easily added CSS selectors are huge.
If we could get default rendering of XML and JSON documents (like the JSONView add-on provides for FF) I would be a very happy camper.
"Your only a moment away..." should be "You're" (or "You are") not "Your".
Looks clean and simple, though. I like that pricing is based on data stored instead of number of repos or users.