That's been their strategy, yes, but the problem with not finding a way to monetize as you grow -- by putting off monetization -- is that you risk pissing off users even more when you suddenly introduce it, and at such large scale as to satisfy the needs of public shareholders. It's sort of like burying a mess under the rug: it's out of sight for awhile, until it festers, rots, and really starts to stink.

Sooner or later, Facebook was always going to have to monetize. Its deliberate strategy of putting off monetization until it became a de facto standard social network was a gamble. It seemed reasonable at the time to many inside and outside of Facebook. But my point is that, knowing what it was gambling on, Facebook shouldn't have taken in so much money that it was forced to go public before its gamble was ready to pay off. Now, it's going to have to start monetizing quickly and massively, come hell or high water -- at a time when it still doesn't quite know how to do so without pissing off its userbase. It's in a worst-of-both-worlds scenario, which could have been avoided regardless of its user growth vs. monetization strategy.