Eventr, a Event Registration Plugin for WordPress lets you use your blog as an event management tool. You can create an event - the plugin will let people register for the event - it can also show a list of all the attendees. Once the event is done, you can deactivate the event and no more sign ups will be allowed.
Commercial Use
Modify
Distribute
Place Warranty
Sub-License
Hold Liable
Distribute Original
Disclose Source
Include Copyright
State Changes
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.