lol you guys are debating waht program he used by just what his signatures look like, wow you must have agood eye for that sort of thing. another thing on the png/gof (or evern .jpg) is that .jpg (and .gif i think too) are lossy, whereas .png is lossless compression. .tff is o.k. too, but its usually slightly larger tahn .png. i just don't like .gif pictures for some reason, animations are usually ok, but pictures alre always weird. for more information, go to http://en.wikipedia.org/wiki/Image_file_formats also, the reason for .gif is that it can only use tha 8 but color palette.