Nice work, you've clearly put a lot of work into this - You have a new follower :)

I really like the concept, I think its useful and a good fit for steem data. Sample 5 is my favorite here
I've been using a customized fork of timdreams wordcloud2js to make "steemclouds" for Hive account@steemleak donation reports using a similar method to what you described - but sizing by vote loyalty and weight instead.

Hive account@sandwich put a lot of effort into steem.cloud too :)