[hijack]
The usefulness (or lack thereof) of modern maps has been a subject of some mutterings in our gaming group. Those in Dungeon, for instance, are very pretty, but often far less useful than a simple black and white line drawing would have been. For one thing, it's impossible to photcopy a version for player use (since any white-out of map notes will be blatantly visible) and even photocopying a version for yourself - which is much easier than constantly flipping back through pages to find it - sometimes results in a murky and incomprehensible mess.
Todd Gamble's Cartographica has similar problems - if a second volume is done, I'm hoping for black & white line art, instead.
[/hijack]
On the other hand, the map-a-weeks are free, so I have few complaints about them. I've been able to use several in the past, and the next game I plan to run uses four of them.