After months of work behind the scenes, vague promises up front, and half-assed hacks, today we are very excited to take the wraps off exciting new stuff for Lifehacker commenters. In order to make having conversations with your fellow readers here easier, we've just rolled out a major revamp to our site commenting system. Fresh out of the oven, our all-new "threaded comments" system organizes comment replies more logically and makes discussing the post at hand—and other