One of the joys of using Firefox is the add-ons you can get. There are lots of clever ones out there, but one I really like is called property-bee. Now, if your not buying or selling a house just now, this will not interest you very much, however what you do is install the little add-on and then visit rightmove, which is the biggest property website going. The little add-on is viewed in the left hand toolbar, and shows you all the details of the property listed with the changes that have happened to them, such as when it went on, what has changed in the description, and most importantly, the differences in the prices between when it went on and what it's at now. This is vital information in the current market!

At the very least, it's interesting to see which massive 5 bedroom pile has lost the most money ;-)