Yes, and apart from php hiphop there are many other projects they have made and opensourced which help in scalability of service. They are even contributing to projects like WURFL by collecting more data from the 130 million mobile users to increase the accuracy of WURFL data for public use.
Earlier i used to hate Facebook but recently i have been reading a lot on FB blogs and other areas they contribute and now i feel they are making a huge contribution to technology. There are issues like not allowing users to export data, but at the technology front they are giving us a lot. No other company releases so much of their research as open source. Regards, Gautam Chaudhary -- l...@iitd - http://tinyurl.com/ycueutm
