Statistics message is not right.
For example, when I finished my text reading it shows like that:
Congratulations! You added 1 LingQs, 1 Known Words and earned 0 coins this lesson. To spend your coins visit the Avatar store.
But really there were much more LingQs, the same was with Known Words.
I noticed it appears after I refresh the page by F5 (by the way, I need to do it because of mismatch of number of remaining blue words and New Words counter - I often notice it by the end of reading, it gives wrong work of auto-counting Read words when you reach the end of the new text).