Is Facebook Growing Up Too Fast?
By BRAD STONE
Published: NYT March 28, 2009

I think this is a fascinating visual of how new generations of business based on the net could grow in the future. Note the geographic and demographic changes as well as how Facebook is used.

WHEN Facebook signed up its 100 millionth member last August, its employees spread out in two parks in Palo Alto, Calif., for a huge barbecue. Sometime this week, this five-year-old start-up, born in a dorm room at Harvard, expects to register its 200 millionth user.
That staggering growth rate — doubling in size in just eight months — suggests Facebook is rapidly becoming the Web’s dominant social ecosystem and an essential personal and business networking tool in much of the wired world. .........