BuddyPress: Don't Load Gravatar for Member Avatars
Stops BuddyPress from requesting Gravatar images for members without an uploaded photo and uses the local mystery-person image instead, for privacy and speed.
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Don't Send Guest Commenters' Emails to Gravatar
Shows a built-in placeholder avatar for comments from visitors without an account, so their hashed email address is never sent to Gravatar, while registered users keep their Gravatar picture.
Initials Avatars Instead of Gravatar
Replaces Gravatar images with colored circles showing each person's initials, generated locally, so no visitor data is sent to Gravatar.
Profile Picture From the Media Library
Lets users pick a profile picture from the Media Library on their profile screen; it replaces their Gravatar everywhere.
Turn Off Avatars in the Dashboard Only
Stops wp-admin from loading an avatar for every row of the comments and users screens and the dashboard, which saves dozens of requests to Gravatar, while avatars keep showing on the front of the site.
Your Own Image as the Default Avatar
Adds your own image to the Default Avatar choices under Settings > Discussion, used for people without a Gravatar.