#hivefivecallforcontenders Today is Lifehacker's 8th birthday! In the past 8 years we've offered up everything from quick and simple life hacks to long-form guides to help you build computers, set up private networks, pick the best products or services, save you money, and of course, get things done. For this week's Hive Five, we want to know which Lifehacker guide stands out in your mind the most.