I'm glad that they posted a "miss" - but this reads over and over like a sales pitch:

- I created a card in <X> Basecamp - Someone posted a message in Campfire - We have our own encryption - Another message posted in a different Campfire - Oh, this one uses custom categories! - Todo's in Basecamp project

I get it, 37signals dogfoods their system. What we don't normally see from other posts is that person/company X posted in slack and made a ticket in jira and then created a todo on their trello board.

Maybe I'm being too cynical...