This must have plugin if you have multiable authors or what to show a list of commetaters.
This plugin makes it easy to display lists of user avatars on your (multiuser) blog. It also allows to insert single avatars for blog users or any email address into a post or page. (Great for displaying an image of someone you’re talking about.)
Avatar lists can be inserted into your sidebar by adding a widget or into posts/pages by using a shortcode. The plugin comes with a tinymce editor plugin which makes inserting shortcodes very easy.
Both shortcode and widget can be configured to…
■Show a custom title (widget only)
■Only show specific user groups and/or hide certain users
■Limit the number of users shown
■Change the sort order of users or show in random order
■Adjust the size of user avatars
■Optionally show a user’s name or biography
■Show users from the current blog, all blogs or a selection of blogs (on WPMU/Multisite)
■Group users by their blog (when showing from multiple blogs), and show the blog name above each grouping (experimental feature).
The plugin makes use of built in wordpress (core) functions to retrieve user information and get avatars.
Single user avatars can be inserted using the show_avatar shortcode and configured to…
■Adjust the size of the user avatar.
■Align the avatar left, centered or right.