Just a couple of thoughs I had while reading the article
-On the community lot typ : some community lots give special moodlets I will list the ones I know
Small + Big park: +15 Beautiful park moodlet
Library: "Power Study" has no mood effect, but makes sim learn skills faster.
The Graveyard:"creepy graveyard" -5 moodlet at night (Brave sims don't get that moodlet)
Chinese Garden : "Zen" +20 moodlet, I belive it also helps skilling
-The rabit hole map view tags will override any other type of lot you include it, for ex: if you set a lot type to salon, but place a spa rabit hole there, in map view, only the rabit hole tag will show up, but the lot will still be set as salon and you will be able to use as sylist career building
-As the Story Progression populates the town it might use empty lots as home for Service NPC's, in Edit town it will show as an empty house, if you bulldoze it, the lot will be deleted automatically (same goes with beaches and empty community lots) so you should place some walls befor bulldozing there (thanks to ausette for this info)
-also to carl, I'm using IE9 (because all other browsers are messed up on my pc) I have noticed that in the articles, you can scroll sideways where there is only empty blue space, the first artcile can only be viewed if I scroll, if it can be fixed
This is all I can think of now, will add as I find new info