It strikes me that the 21st century equivalent of “did I just say that out loud” is “did I just post that to Facebook?” And this seems to be particularly true lately for people engaged in violent felonies. As Paula Martersteck noted here last month, alleged bank robbers are already tripping themselves up and being arrested after posting things such as “I’m rich, b*tch” and “WIPE MY TEETH WITH HUNDEREDS” on Facebook. But that is just “after-the-fact” stuff. What about the people in the news this month who actually incorporated Facebook into their alleged crimes? Take 20-year-old mother London Eley, for example. Philadelphia police allege that Eley went on to Facebook and offered $1,000 to anyone who would be willing to kill her ex-boyfriend, the Daily Mail reports. “I will pay somebody a stack to kill my baby father,” she allegedly wrote. The word ‘stack’ is reportedly slang for $1,000. Police say a man responded to the posting and arranged to meet Eley, but this master scheme was undone when the ex-boyfriend/potential victim’s aunt saw the messages on Facebook and alerted authorities. That was quickly followed by reports Tuesday of a bizarre incident in which an “armed man held a…