"For us, growing to 250 million users isn't just an impressive number; it is a mark of how many personal connections all of you have made, and how far we at Facebook have to go to extend the power of connection to the billions of people around the world.", wrote Facebook founder and CEO Mark Zuckerberg. "Today as we celebrate our 250 millionth user, we are also continuing to develop Facebook to serve as many people in the world in the most effective way possible. This means reaching out to everyone across the world and making products that serve all of you, wherever you are--whether through Facebook Connect, new mobile products and the other things that we are building."
About a year ago, Facebook reached 100 million users. In January, it hit 150 million users. Three months ago, it hit 200 million users, and last month, Facebook was catching up to Myspace in terms of the number of unique visitors.
Facebook's growth explosion as of late has mainly been overseas thanks to foreign language versions of it's site. Facebook Connect, which lets sites use Facebook login credentials, has had a big success as well.