OFFICIAL Neighbors, Super Neighbors, & Buddies

[tammyjo408]

I removed a neighbor, unfriend, ran memcache. reloaded farm. but I still see them in that farmers list icon under facebook friends. does it take awhile for them to drop off?
second question, I get a train boost from someone who is not a friend, neighbor or buddy. on facebook, when I got that boost, I clicked on their square (not sure what to call it in train manager) to visit their farm, clicked on toolbox, buddy list, said not a buddy, and I was not on their buddy list, clicked on neighbor, said I was not a neighbor (and they are not my neighbor). even tried blocking them on facebook but that didn't work either.