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At NYU, he studied computer science at The Courant Institute of Mathematical Sciences, where he met the three friends with whom he founded DIASPORA*, a social networking service, in 2010. The project was conceived after the founders had attended a lecture by Columbia Law School professor and free software activist Eben Moglen in February 2010 about the threat to privacy posed by commercial Internet services. According to Moglen, Zhitomirskiy was "immensely talented" and "the most idealistic of the group... He had a choice between graduate school and this project, and he chose to do the project because he wanted to do something with his time that would make freedom".

In the spring of this year, the "Facebook alternative" Diaspora achieved extensive media coverage -- including an article in the New York Times -- and raised tens of thousands of dollars in funding from online donors.

PayPal was blocking social networking startup Diaspora from accessing any of the donations in its PayPal account
No one seemed to know why -- Diaspora indicated that it's happening "arbitrarily."
This happened on the heels of Diaspora reaching out to its users to ask for more donations on top of the $200,000+ already raised via Kickstarter.
After lots of tweets and emails from Diaspora users, PayPal has unfrozen the account, reports Launch.is.

Donald Knuth, an US computer scientist, teacher and programming ideologist, at the Frunze Kolkhoz near Khiva at the cotton harvest

Дональд Кнут, американский учёный в области информатики, преподаватель и идеолог программирования, в колхозе имени Фрунзе под Хивой на сборе хлопка

Stephen Kleene, founder of the recursion theory in mathematical logic, at the 1979 Symposium on Algorithms in Modern Mathematics and its Applications, Urgench, Uzbekistan