Gosh I have no idea but I know they are mammoth huge enormous and make really big bucks. I GOOGLE all the time. I LOVE being able to put words in and get info out. I don't twitter or FB. Not my cuppa tea and also the FB/Twitter crowd is filled with nutjob crackpot GUANOHEADS and insurrectionists and vile vermin who plot and conspire to blow up Democracy. I have no use for it at all whatsoever. I wonder how different our world would be now without them? I shall ask. Thank you for your question. I have no idea what the correct truth reply is. But I sure wouldn't to give GOOGLE. It's like having the world's libraries at my fingertips any hour of the day! :)