Link to the W3C community page for this group, not just to its join l…

…ink. Fixes #15. (#16)

index.html

@@ -31,19 +31,20 @@ <h1>Privacy Community Group</h1>
 is <a href=charter.html>chartered</a> <q cite=charter.html#mission>to
 incubate privacy-focused web features and APIs to improve user privacy
 on the web through enhanced browser behavior.</q> If that sounds
-interesting to you, please
-<a href=https://www.w3.org/community/privacycg/join>join us</a>!
-(In order to join, you'll need to
-<a href=https://www.w3.org/accounts/request>request a W3C account</a>
-if you don't already have one.)
+interesting to you, please join us!
 
-<p>If you have any questions or concerns, the
-<a href=charter.html#chairs>chairs</a> are more than happy to help. The
-easiest way to get in touch with them is to
-<a href=https://github.com/privacycg/admin/issues/new>file an issue</a>
-(preferred) or to
-simply <a href=mailto:group-privacycg-chairs@w3.org>email them</a> (if
-your concern can’t be raised publicly).
+<h2>Participate</h2>
+
+<p>It's easy to <a href=https://www.w3.org/community/privacycg/join>join
+the CG</a> if you'd like to contribute to our work. Please note that, in
+order to join, you'll need to
+<a href=https://www.w3.org/accounts/request>request a W3C account</a> if
+you don't already have one.
+
+<p>We publish a list of
+<a href=https://www.w3.org/community/privacycg/participants>current
+participants</a> on our
+<a href=https://www.w3.org/community/privacycg/>W3C page</a>.
 
 <h2>Our Work</h2>
 
@@ -65,6 +66,15 @@ <h2>Our Work</h2>
 <a href=https://github.com/privacycg/meetings/>meetings repository</a>.
 </ul>
 
+<h2>Questions?</h2>
+
+<p>If you have any questions or concerns, the
+<a href=charter.html#chairs>chairs</a> are more than happy to help. The
+easiest way to get in touch with them is to
+<a href=https://github.com/privacycg/admin/issues/new>file an issue</a>
+(preferred) or to simply <a href=group-privacycg-chairs@w3.org>email
+them</a> (if your concern can’t be raised publicly).
+
 <h2>Code of Conduct</h2>
 
 <p>Please note that all work and communication within the Privacy CG is