While Silicon Valley sobers up from last night's news about Yahoo CEO Jerry Yang stepping down, the question on techies minds today is who's next? Valleywag and blogger Kara Swisher speculates that Peter Chernin, President and COO of News Corp., is at the top of the list. Yahoo's current President, Sue Decker, is also "being considered for the job." Another stab in the dark, at least according to Swisher, is highly unlikely future Governor of California, Meg Whitman.