True. But nevertheless, it is still remarkable, where it got to in that short time. Now, with different languages and all. After getting everyone on the ride, the sky is the limit.

0.5? Ahhh, It just seems like yesterday, that we started with 0.1. Time flies.

I like the current one the most, because it is easiest on the eyes and doesn't distract as much.

I love the new Logo and it has been very well designed. But it isn't very memorable as Icon.

No. 1 falls out of the competition, because in my opinion, every icon, which cuts off the sides of an image isn't appealing at all. It looks cheap and feels cheap (bad design).
No. 2 and 3 on the other hand are just too similar to choose a winner from ;-)