"The PNG image file format is now more popular than GIF" ... On the Web! PNG has been more popular than GIF since a very long time for basically anything non-web needing lossless picture compression. From smartphones icons to OS icons, software logos and icons, etc. I'd say the proportion is about 100:1. Actually I was suprised while just running a "find" on my Linux distro to even find a few .gif files. But thousand…
PNG would have won a long time ago on the web, if it wasn't for IExplorer.
Only the full alpha that GIF doesn't support at all isn't working properly (but can be made to work since IE5.5).
http://calendar.perfplanet.com/2010/png-that-works/#paletted