I went so far as to volunteer to take my ex-wife to visit her boyfriend who was incarcerated in a prison about 150 miles from my home area. I had never waymarked in that area and knew I had about 4 hours down time, while she was inside, to hit the surrounding area. I spent quite a few evenings looking for waymarks to visit that I needed for the grid. Then hit the NY historical markers website to get the lowdown on where those were as well. Of course I also made up a list of all the U.S. Post Offices along the way.
On another subject for a second, I ran into a very active geocacher recently, and while talking, we got on the subject of what we had been up to lately, I mentioned that I was doing a lot more waymarking that geocaching, only hitting them when they come up as a new hide within a few miles of my area. They said they "looked at the Waymarking website and felt it was too complicated" and that they would rather just stick to geocaching. I personally like both sites, however, get a lot more enjoyment from finding something interesting to waymark than I do finding a medicine bottle and signing a soggy log. My kids always go with me and they agree 100 percent, especially when they can get into the picture.