I think google has to find out something new and most important thing, it should advertise very good. It may help it to get popular. I am still not understanding that why is facebook so popular?? Nothing special feature or daily innovation but I agree with that facebook is very great and user friendly plat form to gather all friends and relative at one place and after joining that, a person may loose interest toward it but when somebody send comments to him, he definitely replies back. Thus, facebook is getting huge traffic. Well, good achievement by Mark Zuckerberg. As I heard, facebook will be public LTD. in short period.