Twitter will soon start selling more ads that will show up outside the app, but attached to Tweets that run on other apps.
As a Twitter user, you should not worry about ads infested tweets. They plan to insert ads in Twitter timelines inserted into their own apps using Twitter’s MoPub ad unit.
Since 2years now, Twitter has been saying that it has an audience much larger than its 300 million active users as several people who don’t use their app still see the Tweets.
The announcement is more towards investors than developers for this very reason.