visitors != users. With an average visit time of 24 sec, I guess most of the 4500 "users" are people who, like me, found a link, clicked out of curiosity, spent

visitors != users. With an average visit time of 24 sec, I guess most of the 4500 "users" are people who, like me, found a link, clicked out of curiosity, spent a few seconds figuring out what it was and playing around a bit, and then moved on.