<form method="get" action="https://cscie12.dce.harvard.edu/echo">Email Address:
   <input type="text" name="email" size="50"/>

   <br/>
Please send me email updates:
   <br/>

   <input type="radio" name="sendupdates" value="yes" checked="checked"/>
yes
   <br/>

   <input type="radio" name="sendupdates" value="no"/>
no
   <br/>

   <input type="submit" name="action" value="Proceed"/>

 </form>