Originally Posted by Colmike7

Most show them correctly these days unless they're using a shitty browser that doesn't support it like Netscape 4 and earlier without Quicktime plugins for it or IE4 or earlier for Mac OSX..

If that's the case, chances are that they can't afford what you're selling to them either..

Edit: http://www.libpng.org/pub/png/pngstatus.html#browsers