Doing it now, fairly odd. I got 7/10 as well. Nice site, dark, but well put together. Essential Spoiler: (very vague) You can just tell with most of those nut cases if they were a killer...the ones that looked normal tended to be the madmen. The weirdos were normal. What does that tell us about geeks? We all have the potential?
Its hard to tell, a lot of them were tricky, as if they could be either and some normal people were killers. 6/10
10/10 "You'd spot Hannibal Lector in seconds at an Open Source conference. Your liver's safe." Might have helped that I recognised all the serial killers faces from psychology classes. The others I just assumed were programmers and it worked out. Although I didn't know number 3, so I put what I initially thought and thought it was wrong when I read the description, then saw the rest of it and found I was right.