Comment 2 for bug 246797

The linked bug talks about collecting usage statistics, specifically a graph of how many different people use bazaar.launchpad.net each day.

We want to keep a log for the same reason and in the same way as a normal SSH server: we want to know who's logging into our system. We've wanted this information in the past when trying to track down once-off performance issues, or help users who have broken branches.

As for how long we'll keep it, by default we'll follow the same policy as the rest of Launchpad and keep it permanently: https://help.launchpad.net/PrivacyPolicy.