These "social bookmarking" services make it easier to share and manage your favorite
StumbleUpon, digg, and del.icio.us help you gather content from around the web,
describe it how you see fit, and tag it for easy sorting. These sites also allow
you to see what other people are gathering and tagging (if they've made it public),
and find new content that may interest you.
Social networking sites like Facebook and MySpace also allow you to share content
that you find interesting, with people who visit or subscribe to your personal profile.