Web Worth Blog Value Calculator is a plug-in that gives you a nice tidy widget to display your blog's current estimated value in dollars. This information is displayed to you and your visitors to demonstrate just how much hard work you have put into your blog - Why not show this cool statistic off? This widget is dynamically updated when the sites value is updated at Web Worth. The site must be valued at Web Worth before it will show a value in dollars otherwise you will just see a GENERATE NOW warning.
Download and install instructions : http://wordpress.org/extend/plugins/web-worth-blog-value-calculator/