Can a renewed focus on live-streaming ads and measurement help bring Twitter back from the brink?

"See what's happening in the world, right now,” urges Twitter in its latest campaign, positioning itself as the go to place for news, and live events.
Unveiled by its recently-appointed chief marketing officer, Leslie Berland, earlier this week the latest series of ads appeared to signal that, finally, the platform had figured out what it wants to be. 
This refreshed stance will be welcome news to investors, who for several years have been jittery about Twitter’s slow user growt