kaled - 11:51 pm on Sep 30, 2010 (gmt 0)
I have two thoughts...
1) Perhaps they should have designed in transparency from the start if they intended this format to replace PNG and GIF.
2) Webmasters almost invariably use JPG instead of PNG1 for screenshots, so I'd be surprised the webmaster community suddenly adopts this new standard.
1 256 color PNG provides the best compression for screenshots whilst being almost lossless if the color reduction is done well.