Adds a nonce field to the signup page.

Shows a form for a visitor to sign up for a new user account.

Switch the current blog.

Update the ‘archived’ status of a particular blog.

Update the details for a blog. Updates the blogs table for a given blog ID.

Update an option for a particular blog.

Updates this blog’s ‘public’ setting in the global blogs table.

Update a blog details field.

Updates a blog’s post count.

Checks whether an upload is too big.