I have to say this has been amazing for me as a DM. I have 3 games that I DM for here in Winnipeg, and this has proven to be a priceless addition to my gaming repertoire.
You have everything you need right at your fingertips, and everything is linked to everything else.
I've asked my gamers what they think of it, and they have said it helps to create a more fluid and believable gaming experience on a whole.
PLEASE buy this, as it is WELL worth the 4 bucks.
[5 of 5 Stars!]