'Social' Animal: Mark Zuckerberg, played by Jesse Eisenberg, may be a revolutionary thinker, but he doesn't want to topple the system, says critic John Powers. He wants to be successful within it. Merrick Morton/Columbia Pictures hide caption

itoggle caption Merrick Morton/Columbia Pictures

Rep. Thaddeus McCotter, R-Mich., rocks out on Facebook. facebook.com/thaddeusmccotter hide caption

itoggle caption facebook.com/thaddeusmccotter

A programmable LED pumpkin at hacker space HacDC, in Washington, D.C., designed by member David Kaufman. Many Halloween purists prefer to design, rather than buy, high-tech ghouls, goblins and ghosts. Jacob Fenston for NPR hide caption

itoggle caption Jacob Fenston for NPR

Cory Doctorow's With a Little Help will be available online with four different covers, including this one by Frank Wu, and in limited edition hardcover. Enlarge for full cover. Frank Wu hide caption

itoggle caption Frank Wu

Like the look of that celebrity in distress? In-image advertisers hope you will. NationalEnquirer.com; CeleBuzz.com; StarMagazine.com hide caption

itoggle caption NationalEnquirer.com; CeleBuzz.com; StarMagazine.com

Facebook CEO Mark Zuckerberg at Facebook headquarters in Palo Alto, Calif., on Oct. 5. Facebook said it was working to fix the privacy problem reported by The Wall Street Journal. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP