The goal of this service is to provide a single, central login service for all Ubuntu-related sites, thus making it more convenient for Ubuntu users and community members to access information, communicate, and contribute. This service will replace the existing Launchpad login service that is currently in use for many Ubuntu-related sites, although existing Launchpad accounts will continue to work in the new service.
Over the next few months we will be moving all of the Ubuntu and Canonical related sites that currently use the Launchpad service to this service, starting with sites we manage directly and then working with community site owners to move the community-managed sites.
Because of the number of existing Ubuntu users who have created accounts in Launchpad for the purpose of logging into other sites, we have set both services to share account data during the transition. Launchpad is in the process of enabling users to log in with an Ubuntu account and, once completed, this sharing will be removed. This does mean that you will be able to log into this service and Launchpad with the same credentials for a while. We realise this is something internet users have been encouraged to not do but it is a necessary side-effect of the transition. Doing this ensures you won't lose access to services you've purchased from us in the past or your account histories in the sites you've previously visited, as long as you use your existing Launchpad credentials on this site.
We have answers to some questions on our FAQ page. If you have more questions, please submit them on Launchpad and we'll do our best to respond to them. We also have an email support channel - you can submit your support requests using our support form. If you have found a bug, please take a few minutes to tell us about it on our Launchpad project's bug tracker.