1. I have no problem with receiving graffiti but some people hate it. Often they'll say that if they put their name in the finding friends forum though so you know in advance. Personally I prefer tapping regular icons rather than graffitiing.
2. You only get a benefit from tapping sideshow Bob in Other Springfield or when you're doing the Bob quests, but that again only means tapping him in your own town or OS.
3. Tapping KEN's is fine, generally speaking they would always be in the build stage anyway as the benefit comes from completing the build, not collecting the income.
4. Tap wherever you want. If you want to connect KL tickets go there, if you want cash go to Springfield.
