Billions of Tweets
Numbers matter to some people. It's sometimes not important who did something first - but rather who did things on "milestone" numbers.
Here are the billionth messages posted on Twitter.
1,000,000,000


Although Ann is still on Twitter, the website they pointed to is long since gone.
2,000,000,000


Star1051's account appears to have been taken over by a spammer. It is no longer in use as of December 2009.
3,000,000,000
3,000,000,000 is gone
4,000,000,000


No longer using Twitter as of August 2011.
5,000,000,000
5,000,000,000 since deleted.
6,000,000,000


Они задолбали is still going strong
7,000,000,000


Trish announced she was leaving Twitter in April 2011.
8,000,000,000


Last seen in October 2013
9,000,000,000


Makiko is still Tweeting away.
10,000,000,000


Kimmie is a relentless Twitter user.
...and then?
Late in 2010, Twitter switched to Snowflake for generating IDs. This meant Tweet IDs were no longer guaranteed to be sequential (although they are usually sortable).