I installed Ubuntu Touch today on my Nexus 7 (grouper nakasi) and I appear to be logged in as somebody else - a developer perhaps. I have their Facebook notifications, music they like, people they know, missed calls, etc. Seems a little weird. Is this not ready to be personalized yet? I can't find any kind of settings page to do something like a factory reset.
Not much in the way of personalisation can be done yet, but if you wish you can get rid of the inbuilt contacts.