A few more sets of possible data geared towards specific regions might be nice. For example right now the output is exclusively ASCII which is unlikely to hit any legacy charset mismatches.
Is progLipsum something that you find useful? What changes or additions would you make? I appreciate any feedback, and aim to continue development if this proves to meet the needs of other developers.
Also, I developed this as a solo entry for Rails Rumble 2012 - if you like it I would appreciate a vote at http://railsrumble.com/entries/355-proglipsum ;) Feedback is far more important though...