Search Engines vs Social Bookmarking Sites: Where Does the Future of the Internet lie? Google vs Facebook, Twitter vs Bing...
StumbleUpon can be a great way to get blog post ideas in addition to gaining some traffic bursts for your website or blog.
StumbleUpon gives you the ability to follow and connect with friends from FaceBook and Twitter to expand your StumbleUpon network and get more traffic.
StumbleUpon Su.Pr won't match Google Analytics when it comes to visits to your website or blog post, many analytics reporting services can be missing or inaccurately reporting pageviews.