Brace yourself for a long and detailed series of discussions about the way Mark Zuckerberg does (or doesn't) zag his "Z"s and loop his "g"s. The argument over a contract that supposedly gives Paul Ceglia ownership of 84 percent of Facebook has escalated, with Facebook hinting that the contract is a fake. This takes the conversation in an interesting new direction, almost 180 degrees from where we were on Tuesday,