Good for Business, Bad for Consumer
If you own a business this app will be great for you. You will love the fact you can buy rights to any font for around $35. If your a consumer this is why its bad, because you dont want to buy a font you are only going to use once, for a petty little project. The app itself is amazing for its amount of fonts however, and it makes me want to go into the font business for the amount they sell these for.
Super freaky geek about
FontBook™ Typeface Compendium, v3.0.2