Easy! Sign up because:

• You get to use the Call Sheet
• You get to post and edit your own auditions
• When email notifications about new/changed auditions are implemented, you'll get to sign up for them
• When bulletin boards and community announcements are implemented, you'll get to participate
• You will never be spammed, sold out, or your privacy violated
• We all pretty much know each other anyway, so let's have fun!

By the way, you've got some nerve calling my site stupid!