What does it do?
It replaces the text punbb bottom right corner with a png (in the case of my extension a small blue information symbol) that leads to a url of your choice (extension uses my site 
- you can change it back to punbb.org or whatever...)
Install Instructions
1. download & unpack
2. change url in manifest from keydogbb.info to X
3. add your own png to img folder (its called info.png in my case)
4. upload to your extensions folder and
5. one-click install in admin
Demo (bottom right corner 
)
Cool would be if one could just set the url in the admin section, but I'm not really capable of that yet! But that's where this thing should be going I guess....
Feedback welcome as always.