I think your feedback on the pricing page is great, and we'll definitely be making some quick changes to the design later today.
Regarding the Signup screens, I personally appreciate when websites use OpenID or OAuth so that I can use an existing account instead of creating a new username / password. That is why we chose to use Github and Google, and we hope to support more providers in the future (such as Bitbucket). I'd be interested to hear your thoughts.
Looking forward to trying it out with my several Ruby tasks. Would be nice to easily setup a CI test on them. I've tried several before but none have been simple enough to use on a whim. Drone may fill that gap.