A common trap when setting up google analytics on multiple websites is to add each of them to a single user account or email address. Unfortunately this can cause issues down the track if you ever need to pass on administrator access to another person. The new user will be able to access the data for all of your other analytics accounts/properties.
I have tried to transfer accounts in the past, only to find out it was impossible. However, it seems that with google recently bringing in a new analytics administration page, it is now possible to transfer account ownership to another user or email address. And it’s easy!