(Add disclosure that gravatar images are hosted at automattic)
* you can select a non identifying login name and change it at any time you want,
* you are not required to include personal data in diary posts, comments, email listserv, the wiki, or other OSM communications methods, and you may delete diary posts at any time through your account,
* you can request your account to be deleted (restrictions see below) and this will be conveyed to registered entities that are using our full data.
You should not enable gravatar support or use an e-mail address you have associated with a gravatar with if privacy is a concern.