Deprecated functionality to gracefully fail.

Store basic site info in the blogs table.

Install an empty blog.

Set blog defaults.

Deprecated functionality to determin if the current site is the main site.

Determine if user is a site admin.

Check whether a usermeta key has to do with the current blog.

Update the status of a user in the database.

Deprecated functionality to validate an email address.

Return an array of sites for a network or networks.