What's "refreshing a skill" and why is it worth so many points?
I just looked at my stream and noticed one user getting as many as 160 to 200 coins at a time for "refreshing a Spanish skill". At other times they got a much smaller number of points for this activity, like only 2 to 20. What is this and why do you get so many coins for it (or is it some kind of bug in the stream display)?
It is lesson practice - timed or not. You receive 1-20 points for it. And if you do it many times, the sum is shown in the stream. For example if a person did practice 20 times in a row and received 10 points an average, you will see that he earned 200 points for "refreshing a skill".