For those web surfers who love to see really neat stuff on the internet, but like me don’t have the time to spend searching for it there is a great Firefox plugin called Stumble Upon.

At the end of the day,it may be just another social bookmarking service, but the nice thing about it is that it’s customized to your tastes. During the initial registration you give topics that you want to view sites about, then when you find yourself bored just hit the “Stumble!” button and you are taken to a relevant site that has been recommended by someone with similar tastes as yourself.

Another nice feature is that you can sort the sites by language, by content type (wiki, video etc…) and by tags. It makes it really easy to burn some time that you might otherwise use doing something productive.