To clarify: growth is great, don't get me wrong, but there's a point where you just start running out of market and need to focus on stability & maintenance. When you've got over 10% of the world's population signed up and 5% using the non-essential service daily, focus on efficiency and loyalty; growth becomes the follow instead of the lead.

I'm surprised so little is made of dividends. Growth has faster and sexier return, but will fail sooner than long-term steady well-maintained income. $5/user may not be much, but it's better than $4 and falling. Focus on maintaining long term loyalty; there are a lot of newcomers bent on seducing current users away.