Sudden bleeding in the brain can cause a hemorrhagic stroke. The bleeding causes swelling of the brain and increased pressure in the skull. The swelling and pressure damage brain cells and tissues.
That means 651 million accounts â about four times the number of active Twitter users â have been registered and then been abandoned by their owners. Those 651 million accounts are Twitter's dark pool of users: the people who signed up and didn't like it. Their accounts continue to exist, unused, according to Twopcharts. We asked Twitter to tell us its total number of registered users, but the company declined to comment. Here's Twopcharts' data as of Nov. 5:
If there's anything that's surprising, it's how small Twitter is in real life. On the web, it feels like Twitter is everywhere. But in the U.S., for instance, Twitter had only 49 million monthly active users on average during the second quarter of this year. And that was only up a million from the previous quarter. For comparison, Facebook had 198 million monthly users on average in the same period.