I tried to register for twa^Hitter yesterday and couldn't fill in all the captcha it was throwing at me. First it was some innocent point a train to station a letter shown in picture on the left and after I barely completed that it was throwing at me 6 pictures of different string knots where I was supposed to point out which picture has two strings or maybe just one. Funny thing is that after first 5 it throws 20 more and after 40 or 50 filled in total I just gave up - no twitter for me I guess and that is probably for the best.