Brutsch closed his main Reddit account as his pseudonym Violentacrez was being exposed.

FORBES: Today I Learned: Reddit Could Be Worth $240 Million

Andrews was easily the most anxious patient I took care of that month, a gray Michigan February (is there any other kind?) which I spent in the hospital caring for patients admitted to the general medical ward at the Ann Arbor Veterans Affairs Medical Center. (Andrews is a pseudonym, as are all the patients I blog about, unless otherwise indicated.) He had plenty to be anxious about, too.

FORBES: Do Oncologists Lie to Their Patients About Their Prognoses?

For example, Infante says a Facebook user can post a profile photo that is not actually of them, or use a pseudonym, so as to not have their actual name and likeness used in ads.

FORBES: Facebook Will Pay $10 Million To Make Its 'Sponsored Stories' Problem Go Away

He was almost as proud of being an amateur jazz critic (writing for years, under a pseudonym, for the New Statesman) as he was of being a professional historian.

ECONOMIST: Eric Hobsbawm, historian, died on October 1st, aged 95

No one really knows who is really behind Bitcoins, as the creator is just a pseudonym Satoshi Nakamoto.

CNN: Don't get bitten by Bitcoins

The emails came from someone identified as "Peter Williams, " though that may be a pseudonym.

NPR: Sen. Menendez Says He Looks Forward To Vindication

Formal proof is a notion developed in the early part of the 20th century by logicians such as Bertrand Russell and Gottlob Frege, along with mathematicians such as David Hilbert (who can fairly be described as the father of modern mathematics) and Nicolas Bourbaki, the pseudonym of a group of French mathematicians who sought to place all of mathematics on a rigorous footing.

ECONOMIST: Just what does it mean to prove something?