need a readme.txt (i.e. how do I use this module?)

The latest commit has a README which explains the history of the module and its current usage. It's not ready for production yet - it doesn't have its own UI configuration yet and still utilizes a pretty major hack to work - but it's basically functional if you need to use it, see http://drupal.org/node/778128#comment-2947612.
(I can't get a proper release of the latest HEAD yet, so you'll have to checkout from CVS until I sort that out.)

I got stuck trying to troubleshoot this module and README.txt wasn't especially helpful. I know you're busy, so instead of asking you to update it, I spent a few minutes practicing patch-writing. I took liberties, so feel free to make changes if you don't like it. :-)

Unfortunately I used the old, non-git method. If that doesn't work so well let me know and I'll try the new way.

Thank you, i'll try to update this when I get a chance.

Ok,I updated readme.txt file and committed to the D6 dev version (http://drupal.org/node/1162100).

thanks davidneedham

new version released 6.x.1.2