Nick - 2011-07-10

The forum is probably more adapted to answer this.

Yes we care about users privacy and that's why we suggest any user to use the offline API. It is not mandatory to post data in order to use it but only to mention the contributors of the project.
Have an exemple http://www.openstreetmap.org/copyright

We request login and password to be able to erase all the data that would polute the database. We are very similar to the mapping activity of openstreetmap.

Hope it will suit you anyway.