I had an idea the other night. I've found and bought so many deals off this site (and others!) over the years and have no real idea of what I've bought, how much I've spent etc.
So I've begun development of an application entitled DealBuddy. It will be powered by an Access 2007 backend and will enable you to keep a record of all your deal purchases, with reports available, for example, to analyse your spending over a particular timeframe.
A website and development forum will be available in the next few weeks, with a public beta expected before the end of 2009. The software will (for the foreseeable future) be free to download and use!
Hopefully if it helps me it will help you guys in some way. :D