Clay Moore has written some interesting blog posts about how he uses EagleFiler:

• Using EagleFiler
• Setting up an encrypted Library in EagleFiler
• How to use EagleFiler Stationery to make a database

I think most EagleFiler users could benefit from using stationery more. You can use it to easily create different kinds of documents, use it as as sort of database (as Moore describes), and you can even write scripts to apply metadata when you create a new record via stationery. For example, a script could assign tags and name the new file based on the current folder or date.