If you're going to leave your job at TechCrunch , you better have a good reason. I think Mark Hendrickson actually may have had one. Hendrickson left TechCrunch is March. After about two years of writing and doing development for TC, he got the startup itch. He formed a company, Worldly Developments , and along with co-founder Jay Marcyes is now ready to unveil their project: Plancast . As you can derive from the name, Plancast is a way to easily broadcast your plans to your online social circle. But a better way to think about it may be as a " Foursquare for the future ," which is how Hendrickson often describes it. The main idea is that while many people use Foursquare and similar location-based services like Gowalla and Loopt to share where they are, Plancast is about sharing where they will be .