Father Ksawery Knotz doesn't see himself as a sexpert.
Dressed in a brown habit of the Capuchin friars, he certainly doesn't look like one. Yet, since the celibate Catholic priest started publishing his online sex guide in 2003, he has developed a healthy following of couples from all over Poland who seek his advice on matters ranging from God-approved birth control to the morality of oral sex.
"People want to read about sex," he said. "It's a good way to communicate with people."