No, its of course not! This website is for people above 13, including adults and matured people too as stated in the site page.
Many new folks specially teenagers join this site because of their desire to learn about the mysterious things, the desire often found in youngsters. But there are matured and aged people here as well who are well learned and have knowledge who are involved in witchcraft etc. Moreover there are people under 18 here too, who are matured as well and have knowledge. As it goes, don't judge a book by it's cover.
This site is for one and all.