Honestly, the "world building" is the whole reason I got into making maps in the first place.
It is also why I've been slacking off a bit on my map, though I have made quite a bit of progress that I haven't posted, mostly because I'm not sure it is the right direction for my map.
I plan to add a lot more to the wiki about cultures, creatures, races, places, etc. in fact I had a big page written up about the people left over from this once-vast empire that I lost when my computer lost power for a moment. But that should be up as soon as I get around to re-writing it.
I am putting in information that isn't all entirely related to my entry, and will probably need some editing once everything gets more firmly established in other regions, but for now I'm just gonna go hog wild and worry about the overlap down the line.