There's not any restrictions from Unisys on the use of GIFs. If we have a random GIF file on our web page we're not beholden to Unisys to pay them 13 cents because of patent issues. They're just extorting cash from the folks who make tools who make the GIFs. Now if you're not wanting to use GIF out protest, then that's groovy. (PNGs can be used to do lossless GIF-style graphics that may get mangled by jpeg)