What's Next for Instagram?

I happened to run into Instagram CEO Kevin Systrom at Cafe Venetia, and I couldn't resist the opportunity to ask him a few questions while he waited for his Latte Macchiato. So, what's next on the horizon for the popular photo app?

"I don't know. Probably a new filter? Who the [expletive] cares?"

How does the company plan to monetize and justify its billion dollar acquisition by Facebook? Systrom grunted, refusing to make eye contact with me. Then the barista called his name, and he picked up his drink and started making his way to the exit.

Any plans for a Windows or Blackberry app? Systrom pretended not to hear me as he walked out the door.