I just joined and had a lot of trouble with the part where it shows the six letters and numbers and has you enter them. It took me three tries to get it right and on my firt try I refreshed it about 5 times and couldn't figure nay of them out (including the one I submitted). In fact most of them seem to have only 5 letters and numbers so I thought there was something wrong with the text (there are six ...). Maybe it's because I'm on an old laptop with not such a sharp screen but it was very hard to get it right.