I've created a companion link-sharing service to Go2.me - this one more with fun in mind more than simply utility. Quip-Art lets you share any web page that has an image of your choice overlayed on top of it. You can choose from artist-generated images that are already on the site, or upload one of your own. Here's a sample (you can continue reading this post underneath the following Quip-Art link:
I'm hoping some talented artists and designers will have some fun with Quip-Art and be motivated to create some fun overlay "stamps". As an incentive, every link that is created with your image will have a credit link back to your own site. You can even get a customized bookmarklet that will let you quickly stamp your image over any web page.