When you sign onto PoshCode using your Windows Live ID or other means of authentication for the 2011 Scripting Games, you are taken to a profile page. This page allows you to update your user display name and your email address. The email address is not exposed to other users, but does show up when I run the report to find out who submitted entries for the particular events.
For today’s drawings (I wrote a script that pulls random names from the list of all entries for Beginner Event 1 and Advanced Event 1), I noticed that some people did not enter their email address. This means I have no way to contact you. See the rules for details. Also, see Scripting Wife Signs Up for the PowerShell Scripting Games.