You've heard of the Special Victims Unit, but what about the Social Networking Unit? The time has come for criminals dumb enough to boast about their exploits on Facebook and Twitter to pay the proverbial piper. According to NY Daily News, the Big Apple's newly minted Assistant Commissioner, Kevin O'Connor, will enlist the department's juvenile justice unit to hunt down ne'er-do-wells on various social networking sites. So remember, even if you're friends don't care about the Cookie Puss you just posted to your Facebook page, somewhere out ther