Event signup link should show even if user not logged in...

I've received many emails from members who say they can't see the signup link for various Stub volunteer trail work parties.   Generally it's either because they aren't logged in (you must be logged on to see signup link as well as who has already signed up), or it's been technical issue with version of their web browser.

It'd increase useability of site if the signup link ALWAYS was displayed for event regardless if user logged in or not.   System should prompt them to login if they haven't already when clicking "signup for event".