What are some alternatives?
Reddit - Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.
Quora - Quora is a place to gain and share knowledge. It's a platform to ask questions and connect with people who contribute unique insights and quality answers.
Raddle - A web-based forum where users submit links, pictures, posts, etc.
Digg - Digg delivers the most interesting and talked-about stories on the Web right now.
Stack Overflow - Community-based Q&A part of the Stack Exchange platform.
Hacker News - Hacker News is a social news website focusing on computer science and entrepreneurship. It is run by Paul Graham's investment fund and startup incubator, Y Combinator.