Twitter reported earnings today. The revenue and EPS figures were great, but the monthly active-user numbers were not.
Twitter said it has 241 million monthly active users, which is only up 9 million from the previous quarter. This has the stock plunging in after-hours trading.
This won't make Twitter happy, but we charted out its user growth in comparison to Facebook. Not only is Facebook significantly larger, it's also adding more users on a quarterly basis. Despite the fact that Facebook is nearly ubiquitous, it added 39 million more users last quarter.
Twitter remains a niche service relative to Facebook. And it doesn't look like that's going to change any time soon.