I wonder if Bing has seen an uptick in searches for 'why has Google changed colours' and 'why is Google now spelled Bing'?
I suspect the mystery of the changed homepage and new toolbar is, to many users, alongside the mystery of why the printer sometimes doesn't work or my cell phone drops out when I'm still in the living room. 'It's technology. It happens. Nothing I can do about it.'
Which I guess means Zugo [Edit - actually, Make-my-baby.com] is manipulating the uneducated (in a tech sense). Borderline business behaviour, though a well thought out and executed strategy.