Blogates has plugged Contact form into your control panel. Now you may use Contact form where you want other to contact you.
How to use contact form?
1. Login your account, Go to Options -> Contact Mail and update your email address and any other options you wish to change. To disable the automatic redirect, leave the destination field empty.
2. Add {mailform } (No space) to the page where you want the form to be inserted
Do I need to active plugin? No 
Thanks Phrixus written this plugin
[tags]Word Press, Contact form, WPMU Plugin[/tags]