I joined StumbleUpon today and created my profile accordingly. I am really excited about it.
This is a very interesting place for us to socialize and make friends with web people that share the similar interests with us. It also allows us to discover new sites that interest us and rate them accordingly so that it can make better recommendations to us subsequently.
If you are thinking of driving more traffic to your blog or personal or business website, StumbleUpon might be able to help you since it already has 4,163,581 stumblers and the number is still growing. Try to socialize more by making more friends (Stumblers) so that more and more people will come and visit you.
If you are already a StumbleUpon member, why not add me as your friend? Together, we build a large community of friends whom like what we like.