For those of you who are not familiar with StumbleUpon, it’s a social bookmarking site where you can easily bookmark a page with a click of a button, but it doesn’t end there. The coolest thing about StumbleUpon is that whenever you rated/bookmarked (by pressing the thumb up button on your Firefox or IE), that particular page will be shown to other StumbleUpon users who are currently using the service. This will enable them to take a glance at the page and rate it accordingly or they can just stumble another page. In relation to this, whenever you press the stumble button, StumbeUpon will bring you to a random site which is discovered by another user and in most cases rated by others with the thumb up.
StumbleUpon is a great way to kill some time and discover new random sites that fits your selected category. It is the best site to make your favorite posts, videos, photos spread in a viral rate(better than Digg). The only limitation of StumbleUpon is that their plugin only runs in Firefox and Internet Explorer. I stumbled upon a blog with a post targeted to the StumbleUpon team and asking them to make a plugin for the Safari Browser. Until that request has been fulfilled, other browser users might want to try using this workaround to get the most of StumbleUpon in any browser.
This will not require you to install anything or make modifications to your browser. All you have to do is go to this link right here http://www.stumbleupon.com/demo and you can bookmark it in your favorite browser. Every time you want to use StumbleUpon, just hit the bookmark and start stumbling.