I don't get it: They're all rasterized when they make it into a layout. In what way does the process matter? Why isn't this just "Good Web Designs?"

Glad to see Acko.net get a call-out: that's been a favorite design of mine for a while.

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how are these done? is the vector part that they're svg rather than gif, or are the actually created using scripts in the browser?

[edit: i keep checking out sites in the list using firebug. i'm not a ui person, but i am trying to learn. this looks complicated. is javascript inserting the images?]