It's been a long fall from glory for social-gaming dynamo Zynga (NASDAQ:ZNGA). The list of strikes against the company is long, including the its wildly overvalued purchase of competitor OMGPOP last March for the tidy sum of $180 million. Fast-forward to today, and news has now broken that Zynga is planning to shut down its pricey subsidiary, aside from its still-popular Draw Something game. To be fair, the tide has changed completely against the company since the deal closed. We've seen growth slow and a steady stream of executive departures. However, as Fool contributor Andrew Tonner argues in the following video, there are plenty of lessons to be learned from this tech cautionary tale in the making.

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