FORTUNE -- This week, Twitter CEO Dick Costolo hosted a small gathering at Twitter headquarters in San Francisco to give a brief update on the social network's growth. His self-described "State of the Union" highlighted a number of new user stats. The overall message? That Twitter thinks it is in a good spot right now.
There are now 100 million active users -- users who log in at least once a month -- with half of those users signing in at least once a day. Fifty-five percent of them access Twitter via mobile; 40% actually don't Tweet but simply dip into their Timelines to keep tabs on what people are saying.
The site's users are breaking records too. During the World Cup last year, the number of Tweets peaked at 3,300 per second; that number jumped to around 8,900 per second two weekends ago when Beyonce Knowles announced her pregnancy live on MTV's Video Music Awards.
Part of that is due to a growing userbase, but Costolo also says the company has been focusing on shifting over to a new infrastructure that could properly scale and keep up with that growth. (For a complete chronicle of Twitter's growing pains, click here.) He admitted the notorious "Fail Whale" screen that pops up when ever servers crash may be the most popular of its kind in Internet history for all the wrong reasons.
On the subject of Promoted Tweets, or sponsored Tweets, users currently only come across ones from brands they've decided to follow. That will change moving forward. Users will eventually see Promoted Tweets in their Timeslines from brands they don't follow based on what he calls user activity, including who and what they do follow. To that end, the company will roll out a self-service feature companies can use to generate their own Promoted Tweets.
What about Twitter's newest competitor, Google+? "No doubt they'll get massive users," Costolo, a former Google employee, said of the company's latest social effort. "They're bundling it with the Android platform. You can't not see that red number [update] on the upper right hand side. That's going to draw an incredible amount of usage. But how we see ourselves differently, is how can we simplify the UI and what we can edit out. I think these platforms will add [features], but we'll try to edit ours down."
Green industries of the 21st century could spring from unlikely sources -- just ask software billionaire Tom Siebel.
FORTUNE -- Bright ideas about how to help the environment and in the process make a few bucks -- or perhaps even a few billion bucks -- abound. But which of them could actually work?
Might it be billionaire Tom Siebel's new venture, the mysteriously-named C3, which aims to use clever software to radically improve MOREScott Woolley - Apr 4, 2011 10:20 AM ET
Flurry (think Omniture for wireless) helps developers make sense of how we use mobile applications
Weeks before Steve Jobs announced the iPad, a group of data wonks in San Francisco knew it was coming. The app analytics firm Flurry began to pick up suspicious activity in the vicinity of Cupertino's 1 Infinity Loop, home to Apple's (AAPL) corporate headquarters. About 50 devices were ravenously downloading applications that held a small snippet MOREJessi Hempel, writer - Feb 17, 2010 7:45 AM ET
|The Winklevoss twins are Bitcoin bulls|
|My very cheap day|
|Bernanke's advice for college grads|
|Prison exclusive: Bernie Madoff can't sleep|