OF COURSE they snoop!! Snoop, pry, spy, probe, scrutinize, dig into, cross personal boundaries, commit espionage against and delve deeply into the lives of their fellow JWs - it's Theocratic Warfare, after all!! To Arms!
Personally, I think it's because most of them don't have real lives... But very destructive to those still inside and even more so to those slowly working their way out.
Wish there was a magic pill one could slip into someone's coffee or soft drink that would instantly awaken them from the cult-induced sleep. One sociological study done in England stated that the single most significant factor that caused JWs to exit the religion was INDEPENDENT bible study.
Be sure to encourage all your JW friends and relatives to read the bible completely through, every year, like the WTBTS used to say!! (Do they still say that? Better still, in that case! The WTBTS says "Read yer bible!") Zid