Correct, this was from an overenthusiastic user, someone we did not know and had no direct contact with.

At the time we weren't actually making money yet, and most of the contributions to Travis CI came from outside collaborators.

To add to the confusion, we did indeed have a bot in the early days that would comment on pull requests, but only if the repository was using Travis CI already (this has now been replaced by GitHub's status API). However, this was not the same bot account that kept opening unsolicited pull requests on random projects.