Ning (the social network platform DIY Drones is built on) is rolling out a bunch of new features, many of which we'll be implementing here. Today's is the "Like" button, which you'll find at the top of posts (the comment count has also moved to the top of the post when it's displayed on the front page). You can click it for anything that you enjoyed, and over time we'll add features that raises the profile of content with lots of likes.
There's also a Facebook Like, which will post the like to your Facebook feed.
Coming later this week is a proper professional redesign of the site, which will give it a new look (not radically different, but hopefully cleaner and easier on the eye). A bit wider, too.