* Facebook: Yes, mobile is hurting ad revenue

* Ezra Klein: Larry Summers vs. the long-termers

* Perspective: Was Zynga’s deal for OMG POP that disastrous?

* Hubris: Imprisoned swindler Mark Swartz says Tyco owes him money

* Morning Call: U.S. futures point lower, European shares climb and the Nikkei slides.

* Next? Zoe Cruz shutters hedge fund

* Doug Kass: Buy in May and go away

* Derek Thompson: The morality of unpaid internships

* Uptight bank analyst: Zuck’s hoodie a sign of “immaturity”

* Jonathan Bloom: A doctor’s-eye view of Silicon Valley

* Cisco’s Chambers: ‘We sure don’t like enterprise IT spend trend’

* Evelyn Rusli: The Morgan Stanley banker behind most big tech IPOs

* Get Term Sheet: Sign up for our free daily email on deals & deal-makers

* Tweet of the Day: @brianbeutler A gaffe as trial balloon shall henceforth be known as a gaffoon. #Biden