I got really lucky some years ago and was asked to coordinate Rusk County for TXGenWeb and then adopted Armstrong County and now I've added Galveston County, Lincoln County, New Mexico for NMGenWeb and Boone County and Union County for ARGenWeb.
In my Internet travels, I met Bettie Wood who asked me to manage a couple of states for her Family Group Sheet Project. I started in Texas, created one for Arkansas, and then accepted Alaska and Washington, DC. Bettie had to leave the project and I am now the coordinator so I manage all but two states.
In addition to my personal research site, An Armstrong & A Heffernan, I have one more genealogy page called Genlists. It's a study on the surnames MELLEN, HEFFERNAN, BRAZZIL, and SENN, information lists for Milam County, Texas, and a genealogical interest in Huntington's Disease.
Since I wanted to learn to show my dogs, I joined Longview Kennel Club and subsequently created their page. I've created several other commercial sites over the years but those have changed and are no longer my designs. The Internet changes rapidly and designs have to be free to change, too.