Finally, a good idea from Yahoo headquarters! As expected , the company is planning an event to talk about its "open" strategy leading into its two-day Hack Day gathering for developers. (An "open" strategy involves giving developers access to your systems and software so you don't have to come up with any original ideas yourself.) The best part? Kara Swisher reports that CEO Jerry Yang and President Sue Decker will both conveniently be out of town. A Yahoo strategy that involves getting rid of Decker and Yang: This sounds promising.