Senh: My first immediate impression is that it's actually better. The design is simpler and more streamlined. Although I'm not sure if it should default to the My News tab for logged-in users. You should always make what made you popular the most important and prominent feature. In this case, it's the Top News tab, which is the top news items based on Digg users. I'm looking forward to auto-submission of news items via RSS feeds.
Senh: No RSS feeds? Really? That's going backwards, not forward. As for punishing power users, whenever you have a system where users vote on the content, there's bound to be abuse. I'm not sure if there's much you could do about it other than to ban the user whenever he/she is caught.