Facebook announced a big share offering and Mark Zuckerberg is selling 41.3 million shares in the process. When this news first broke, Facebook fell more than 4% in pre-market trading. However, several StockTwits members were quick to point out the true purpose of this offering and Facebook quickly retraced its initial pre-market losses. Here are two comments that show why Facebook announced its share offering. Click them to interact or enlarge: