The blog post bit under your title was supposed to happen a while back, but didn't. It's been brought up again, but we'll see how it goes.
Till then here is a sig solution I hacked up from magpie and such...
Example:
http://blime45.com/feeder/ - or-
Files:
http://filesly.com/uploadimages/17:0...lforsig.tar.gz
Usage:
1) upload the files in the archive to a folder on your server.
2) edit getimg.php with your feed url
3) save and upload
4) come to tf and use
http://pathtofiles.com/getimg.php as the image url. Link the img tag to your blog.
5) save sig
That should do it.
You can change the background image, text size, location, etc all in getimg.php.