The prototype displays all open listings of a given group. They look roughly like this:
Example display for group "ProsperLenders":
However this is only a picture. To see the full function, which includes automatic links to each of the listings check the the example in the upper right on this website (point the mouse over a listing).
The display will automatically update daily.
Be aware that while width is fixed, height of display will automatically change according to number of open listings. Therefore placement should be carefully selected, e.g. in left or right bar of a website.
To get the code for your website go here:
http://www.wiseclerk.com/group-promotion.php
As mentioned, this is a prototype.
I did choose a rather simple layout, allowing for the group leader to put his own headline above it, or to choose a border, or to place a prosper button alongside.
Feedback and suggestions are welcome!