Create an empty blog.

Removes option by name for a given blog ID. Prevents removal of protected WordPress options.

Displays the amount of disk space used by the current site. Not used in core.

Adds an action hook specific to this page.

Prints signup_header via wp_head.

Checks whether a site name is already taken.

Get the remaining upload space for this site.

Corrects From host on outgoing mail to match the site domain

Generates a random password.

Gets one of a user’s active blogs.