The right column of the PF home page says "Robots 221, members 62, guests 1266" under "members online now". How interesting. Greg, Does a web crawler count as a robot? How do you detect robots as opposed to guests? What are those robots doing, and what motivates those who send them? Does PF send robots to monitor other sites? The number of guests is also remarkable. PF members need to be aware of that; especially with controversial dangerous threads. 95% of those viewing PF are silent and not identifiable.