This is quite a data dump :) Nice!
Will need to go throug it a few times.
On a first look, there is data for posts by aplication, there is a breakdown of all the posts by word count, but there is no breakdown on word count by app... if I can see right?
You can get data for character numbers from the comments table, column body lenght... and break it down by app, you can then divide the number of characters with some average character per word and get a proxy for the word by app...
RE: Posts, Word Count, Rewards, Communities, and other weekly analytical reports - 2nd Week of July