I know that I can use gravatar.org's simple API to find somebody's "Gravatar" if they have signed up using an email address.
Is there a similar service which attaches "avatars" (or profile pictures) to phone numbers?
I used gravatar.org API on an email address, and retrieved the person's "gravatar". I would like to know if there is anything similar which would work on a phone number without an email address.
