I have heard that it is extremely difficult to cancel membership in the Knot once you’re in. Membership is automatically renewed every year. I did pay to be on WeddingWire one year (it was very expensive) and got nothing from it, whereas I had gotten one job from it previously when I had a free listing. Lately there don’t seem to be very many leads that actually book from any source, so I wouldn’t suggest paying for them, but maybe it’s different in your area. Try googling vendor complaints for any site you’re considering before you decide. Good luck!