What's one early stage startup which you think will make it big?

Is there a recently launched startup that few people know about, which you think will grow exponentially? What is it and why do you think it's great?

Kifi. They just launched a few weeks ago. I wish I was an investor -- I love their concept and think it will get popular fast.

The overall flow is simple:

1. Bookmark pages you like
2. See and chat with friends about pages they've bookmarked
3. See your (and your friends') relevant bookmarks when you search Google

Their implementation of this simple concept is what makes them valuable.

https://gibbon.co

They launched in November after being accelerated in Amsterdam. They have created a platform they describe as "Playlists for learning", and I think they tackle a really interesting area of education/learning, and I can see some very strong monetisation cases for the future.

*disclaimer - Whilst I don't know the founders, I do know one of the team, but I am neither advisor nor investor, just a happy user.