No login required, not ad-encumbered (yet). Might be a good place to recommend for log uploads, removing the need to zip and/or download them before being able to view 'em.
The latest pull of the devel branch of OctoPrint seems to have incorporated an error tracking plugin that utilizes sentry.io. I'm sure that will drastically help @foosel with her debugging of issues. I realize not the same type of service, but putting it out there in case any developers were interested in adopting their code to utilize something more centralized than gathering logs from multiple users, etc.