Yep, Maple is so cool, it makes a good mild smoking wood when you don't have a lot around,however, if you have an abundance of it(like here in N.Ohio),you could use it as a heat-source wood to extend and compliment other "flavor" woods. I have a seperate stack of Maple I use to help neighbors and stretch my all nighters, but no-one gets my hard to get stuff...
If you have a prominent wood in your area that is good for smoking, grab all of it you can('it' is usually free as it is everywhere.Thus is Maple here.
When you find a friend lacking your easy access wood, barter with it for more exoctics you don't get easily!!! Just MHO!