I find as I use skritter I'm getting really good at learning single characters and lagging in retention of longer words (2,3 character words). Since I run through these really fast, I'm guessing the size difference between the 'canvas' for writing out the hanzi and the little dictionary at the side for displaying the definitions and longer words is a factor. Is it possible to blow up the full words at the lefthand side to be bigger? I think this would pay off for people who go through practice really fast, to be sure that the words are being imprinted as strongly as the animated, huge, individual characters.
FYI I have already blown them up as big as I can on my browser.