Stocks make investors (contrasted with traders) money either by (a) going up in price or (b) paying a dividend every quarter. In order to make your stock price

Stocks make investors (contrasted with traders) money either by (a) going up in price or (b) paying a dividend every quarter. In order to make your stock price go up, you have to show not just profits, but growing profits. With something like Wal-Mart, this just means either cutting costs or selling more stuff to more customers. However, Facebook is going to (over the next few years) approach market saturation - they hit 500 million users 6 months ago, and there are only two billion internet users world-wide, meaning they can't keep growing at their historical pace forever. As that user growth slows, there are two ways to increase revenues (and profits) - either extract more money from each user or diversify into other products or services. If they can't do that, then they have to reorient into a "own our stock because we pay dividends" slow-growth company like Microsoft.