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According to this chart, Safari does pretty well on the whole CSS thing. The number of red and grey boxes on Omn's side of things really hurts, and ties into an earlier thread about Omn potentially using Apple's WebCore in Omn 5.0. Ken Case offered gracious thanks to Apple for WebCore, and Dave Winer misinterpreted. Go figure - the guy has never seemed to get much right in my book. I respect him, and what he's done, but glib misinterpretations such as these have occurred several times. Oh well. The full store is here or is linked to from there.