I picked up Modern Backdrops last night, and I have to say that I'm very impressed. The maps are well done. The content from cover to cover raises the bar on what game writers such as myself need to be thinking about when they begin to write setting information for D20 Modern supplements.
Each town has plenty of information for Game masters to use, whether they want to inject a quick adventure into an existing campaign, or start new campaigns.
Modern Backdrops is a great resource for any Game Master.
My only real problem with the book is that there isn't a printable version, but that's just a minor issue, as I'm sure that the guys at RPGobjects will rectify the problem soon enough. They always have great support for the products they release.
[5 of 5 Stars!]