Retrieve the login name of the author of the current post.

Retrieve the MSN address of the author of the current post.

Retrieve the nickname of the author of the current post.

Retrieve the URL to the home page of the author of the current post.

Retrieve the Yahoo! IM name of the author of the current post.

Retrieve theme data.

Retrieve theme data from parsed theme file.

Retrieve list of themes with theme data in theme directory.

Perform the query to get the $metavalues array(s) needed by _fill_user and _fill_many_users

Retrieve user metadata.