I have finished porting my twitter logo thing to SVG.

This was very similar to the PHP generated GIF method, I created a small function that echoes the code for each string in the SVG format. I opted to use the twitter XML feed instead of JSON as the number of requests will be higher as it does not cache any generated output.

Browser support.

Chrome/Safari work perfectly
Firefox is without animation
IE6-8 do not display without this installed: http://www.adobe.com/svg/viewer/install/ but with it work perfectly.

http://www.joredwood.co.uk/svg.php