Functionally, the site primarily differs in that you follow people and topics, which builds a custom feed. You can also hub (retweet) posts you like, which refers them to your followers. -Not unlike HN meets twitter. Also we are playing up the submission format a bit so that a user's submissions are more like a blog. When activity permits I envision the frontpage to be replaced with a user's feed. A bit more service than destination.
Looking for design feedback that will inform our next UI changes. Thanks! A cool thing to do.