Whenever I translate articles and look at my stream, I'll notice that I got a certain number of puzzle pieces. What are these, and what are their significance?
I believe the puzzle pieces reflect how many sentences that you have translated in immersion. This is not a completely implemented Duolingo function. The Duolingo employees keep saying they are going to fix this, but it hasn't showed up yet. I'm hoping around October 9, 2013 that the immersion section will be revamped, but I expect that the immersion section isn't going to be revamped until after October 9.