Hello All!
This is my first post here. I heard about Morgan's story on a friends FB page and have followed the blog, and every post on here diligently. I finally decided it was time to chime in! I have a couple of points here, for now.
1. It's very common for Google Maps to let areas know when they are doing ariel or street shots. I've seen some funny pictures all over the web where people have written things in their grass, taped something funny into the car window facing the street, etc. I can't personally read too much into the lawn writing because of that. It could have very well been a joke. Also, there has been nothing mentioned (there may be at a later date) about the people who live there.
2. The Ingram's DID own their home. They moved out and leased another home shortly, IIRC 6 weeks, after Morgan's death because they could not deal with the pain. I think that is where the confusion is occurring in regards to them leasing rather than owning. Their house sold shortly after and was a great loss. As they did own the home and not rent, the HOA would have no reason to have their keys.
Anyway, glad to be here and not lurking in the background any longer. I am already addicted and love to read all of your great theories.