Reddit's up-arrow/down-arrow system with the selected arrow highlighted is much more intuitive and easier to see at a glance than a "vote up" and "vote down" with the selected link in bold. It also makes sense to have the point count next to the vote buttons. I spent my first few seconds on this site wondering why there was only a "vote down" button before I realized the minus sign next to the point count had nothing to do with voting.

I agree with the people saying show the number of comments on the front page.