[brianwawok]

I have literally used it for YEARS and never knew what HSSF meant.

https://en.wikipedia.org/wiki/Apache_POI was a fun read

HPSF (Horrible Property Set Format) HSMF (Horrible Stupid Mail Format) DDF (Dreadful Drawing Format)

[userbinator]

Amusing, but I also have the feeling that it's difficult for Java developers to appreciate the benefits of a binary format because the language doesn't make it easy to work with them. XML, on the other hand...