Yes, it is all new to me too.
Opened the WS-2902A on Christmas and am learning that the data isn't mine as much as I would have preferred, but is instead under the absolute control of Ambient Weather. For example, I'm not allowed to delete data and start over, the data that I send is immediately decimated, gets further decimated after 30 days, gets completely purged after a year, all of which is housed on what apparently is turning out to be a bit of a dodgey IBM server that has yet to have its issues of reliability fully resolved.
Don't misunderstand, I really am enjoying learning about all of this and it's great being able to see the readings of our local conditions.