Significant losses, declining ARPUs, failing mobile acquisitions and shareholder selloffs. A stock price down to $3.01. A product catalog repeating previous mistakes. Media coverage ranging from the mystified to "I told you so". A vague promise to get into gambling. Last week was miserable for Zynga and, as the bellwether of social games, was not good news for the whole sector. As Zynga goes, so eventually go Wooga, EA Playfish and countless others.