Just want to add another site to this page which I've been using a lot.
Has the usual interactive maps but they advertise to have the best zoom level available on the net, to be honest it is pretty good.
Also has some semi real time squad planning features, using their desktop tool you can copy /loc in game and it automatically posts it, no need to tab out. We've been using this tonight in our squad and its great fun, map shows where we all are.
Also have some tactical tools so you can draw and mark locations with ease.
Worth a try if your looking for a decent map.