How would the performance of this mobile Flash browser plug-in be on a cellular connection? That's what people use their mobile phones on. I'm sure websites would crawl. All Adobe demos are on WiFi.
Flash banner ads are 3-5 times bigger. Sometimes 200x larger if there is an autoplaying Flash video banner(20K static banner vs 2-3MB video banner).
Flash/Ad blockers are the most popular add-ons for FF & Chrome so whenever they ship it, we'll see how many people actually install Flash mobile! Besides the Farmville junkies! :)
Yes, you do have to optimize the content for it & do a whole lot of other things: http://help.adobe.com/en_US/as3/mobile/flashplatform_optimiz...
Reading that document makes me think badly written Flash apps could have bad performance & drain the battery quick.