I’ve just released a new project – in fact my very first public WordPress MU plugin. As I’ve been working with WordPress MU for a number of years it’s about time I gave something back.
Anyway, the plugin does what it says on the tin. It restricts signups only to people who have been invited. There are a few configuration options, and a page showing some invitation statistics. See more details on the secure invites plugin here.
You can download the plugin from wpmudev.org. As it’s a beta version I expect there to be bugs, so please enter any problems, questions or suggestions you may have below. Thanks.