Fat Black Holes

We've had muching black holes and hungry black holes but it seems we now have fat black holes – see http://phys.org/print301210413.html … fat black holes – but what is on the menu? At http://phys.org/print301230662.html … the problem of super massive black holes is addressed – or what is perceived as a problem. How did they get so big? Apparently, its not from gorging, or muching, that is now old hat. Black holes eating everything around them has gone low key – but something ripples. Gravitational waves, is one line of enquiry – could they create the ripples?