Bradley Horowitz joins Yahoo alumni groupYahoo executive Bradley Horowitz has joined the Yahoo Alumni group on Facebook, Mashery CEO Oren Michels notes on Twitter. Now, anyone can join that Facebook group, so it could just be that Horowitz wants to stay in touch with departed colleagues. And we hear Horowitz is working closely with Yahoo president Sue Decker on a project, so every indication is that his star is on the rise. Still, the voluble Horowitz, normally a ceaseless status-caster on Twitter and Facebook, has yet to elaborate on his move.