Another service has appeared to produce webpage thumbs, You know the drill… simply add an image tag using this format for the src attribute
replace the MYURL with the URL of the page you want the thumbnail for and Websnapr does magic needed.
WebSnapr lets you capture screenshots of (almost) any web page. Let your visitors to instantly visualize any web page before clicking. Increase site traffic, click-through rate and site stickiness.
They also have a neato preview bubble with the addition of some ajaxy/dhtml scripting.