If you’ve looked online for good info about marriage, you may have found the Married Man Sex Life Forum (MMSL Forum.) It was an active discussion group that helped men (and some women) to create great marriages.
I was disappointed to learn that the owners of the site had decided to shut it down. They wanted to concentrate on promoting their books and videos. The forum was taking too much time and not paying the bills. You can get an indication of the great content from an archive copy of the site captured before it shut down.