With custom post types coming to WordPress 3.0, a feature that’s needed on complex sites is the ability to create relationships between posts of different types.

For example, if you have a ‘review’ post type, you’ll probably want to be able to link it to an ‘event’ post type. Once you register this connection type, you will see a dropdown of events on the review editing screen. (The dropdown will likely be replaced with something more scalable in a future version.)

You can manage and retrieve connections using the provided API functions.

The plugin does not create any new database tables; the connections are stored in the postmeta table.

Version 0.1 is a developer preview release. It’s not meant for casual users.