TechCrunch writes, If you’re a startup aficionado, you may be getting tired of the same old launch pages. You know, the ones with a big, splashy image, a message about how something awesome is coming soon, and a box where you can enter your email address. If that’s the case, then you’ll probably get a kick out of the sign-up process at HackerRank. The team behind the site plans to start sending out beta invites next week for “a fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve real-world challenges.” In the...