I signed up for The Knot when I first got engaged and later decided to go with other platforms when designing my website, registry, etc. The Knot makes it very hard for guests to find the correct wedding website, as they are the first thing that comes up on a Google search (likely through paid advertisement). I developed a beautiful website on Minted.com's platofmr that matched my wedding invitations, but guests were led to an unfinished website at theknot.com when they searched for us. Even after I deleted my wedding website with The Knot, guests were led to a registry with them that was incomplete (as I went with a different website). Would not recommend signing up for wedding website, registry, etc until you are sure they are the final destination for your guests' online search.