When we heard this afternoon that controversial Harvard President Larry Summers announced he'll leave the university's top office at the end of the semester, we knew something significant had happened. Lacking any Ivy in our backgrounds, however, we also knew we'd never be able to make any sense of it. This is clearly the sort of thing one will be expected to know about when one travels in smarty-pants media-y circles in this city, and we realized we needed help. We turned to Gawker's I-Went-to-School-Near-Boston Correspondent — a Harvard grad of our acquaintance who wants to be called Magnus — to tell us, and you, what happened.

Last we checked in on The New York Sun — New York's little rightwing paper that could, the offices of which, we're reliably informed, were placed under the protective gaze of the NYPD after the paper published one of the Danish Mohammed cartoons two weeks ago — cultural editor David Propson had submitted his resignation after editor and founder Seth Lipsky fired one of Propson's critics out from under him, and Propson was taking some time away from the office to decide whether his resignation was really for real. Because we're always fond of a good denouement, we're now pleased to report that Propson finally decided to exit the fledgling daily and had his last day there on Monday. (Why his name remains on the paper's masthead — we checked one of the unclaimed copies delivered to our building's mailroom each day — is anyone's guess.)

• Ken Auletta is right about Pinch Sulzberger, Timesmen tell Keith Kelly. [NYP]
• George Stephanopoulos named ABC's chief Washington correspondent. And he doesn't even have to share the title. [B&C]
• Frank Rich is a New York celebrity, speaking pitch-perfect Manhattan liberalism, and that's his problem, says Bryan Curtis. [Slate]
• Atlantic publisher David Bradley to back 02138, a "Vanity Fair-like alumni magazine for Harvard students," which, we imagine, will increasingly be littering the 100TKs. [Boston Globe]

Here's one of the more interesting nuggets we've read in Lloyd Grove's Lowdown in some time: