28 posts and columns on message
Twitter’s popular ad units could see prices go up by 25 percent or more in the next few months. Also: Here’s how “Promoted Accounts” really work, and how much a new follower will cost you.
I last wrote about Bubble Motion, provider of the Bubbly mobile messaging service, exactly a year ago. At the time, the company had 150,000 users. Today, it has more than seven million.