Signup allows users to sign up (or register, as in register for a class) for nodes of any type. Includes options for sending a notification email to a selected email address upon a new user signup (good for notifying event coordinators, etc.) and a confirmation email to users who sign up--these options are per node. When used on event nodes (with event.module installed and regular cron runs), it can also send out reminder emails to all signups X days before the start of the event (per node setting) and auto-close event signups 1 hour before their start (general setting). Settings exist for resticting signups to selected roles and content types, and any single node can be enabled for signup 'on the fly'. Administrators can look at both a signup detail for one node, and a signup summary for all nodes