I feel the pile of rubble comment, or when you try and gather history on a site and there's only streetveiw content from like 8 years prior. Worst feeling.
Kinda, I search for locations near me and then go visit when I get the chance. Then remove them from the map once I'm done. I don't bother pinning ones from really far away cause I would only get a chance too visit them once in a blue moon haha