Here in Iowa, we're fighting back against the cyberspace-based anonymity culture by implementing a new real-life, or "IRL," anonymity culture. This recently-imposed rule at the University of Iowa prohibits professors from calling on students in class by their real names without their consent:
http://www.presscitizen.com/apps/pbcs.dll/.../709210334/1079
However, as the article indicates, "pseudonyms and aliases" are still perfectly acceptable, as they're not considered a "privacy violation." This has led to considerable discussion over at the Chronicle of Higher Education forums, since everyone is trying to figure out if the pseudonyms and aliases can be determined by the professor, or if they have to come from the student:
http://chronicle.com/forums/index.php/topic,41861.0.html
Generally speaking, if the professor determines the pseudonym, students will be known by such names as "Mouth-Breather Number Five," "Red Tee-Shirt," or "Three of Eight." Whereas if the students get to decide, the names will be more along the lines of "I.P. Freeley," "Supreme MC Jack Sparrow," and "Mike Ockhertz."
Ah, yes... This is how society crumbles.