Adding RetroShare comparison (#1244)

i2p2www/pages/site/comparison/index.html

@@ -22,6 +22,7 @@ The following are discussed on the <a href="{{ othernetworks }}">other networks
 {%- endtrans %}</p>
 
 <ul>
+  <li>RetroShare</li>
   <li>Morphmix / Tarzan</li>
   <li>Mixminion / Mixmaster</li>
   <li>JAP</li>

i2p2www/pages/site/comparison/other-networks.html

@@ -6,6 +6,7 @@
 The following networks are discussed on this page.
 {%- endtrans %}</p>
 <ul>
+<li>RetroShare</li>
 <li>Morphmix / Tarzan</li>
 <li>Mixminion / Mixmaster</li>
 <li>JAP</li>
@@ -22,6 +23,24 @@ You may contribute an analysis by entering a
 {%- endtrans %}</p>
 
 
+<h2>RetroShare</h2>
+<i><a href="http://retroshare.net">[RetroShare]</a></i>
+
+<p>{% trans f2fwiki='https://en.wikipedia.org/wiki/Friend-to-friend' -%}
+RetroShare is a set of peer-to-peer applications running in a
+<a href="{{ f2fwiki }}">Friend-to-friend (F2F)</a> network. Each peer of such F2F 
+network makes direct IP connections only to authenticated peers ("friends") after explicit 
+certificates exchange. It can discover unauthenticated peers (e.g. friends of friends), 
+but connections to them are relayed over "friend" peers for providing privacy and anonymity.
+{%- endtrans %}</p>
+
+<p>{% trans -%}
+RetroShare is designed to build a private network of trusted peers, while I2P is designed 
+to be a large-scaled public anonymous network. Recent versions of RetroShare have options to run 
+as a public "darknet" by using I2P or Tor as a transport. That way all connections are 
+anonymized and no trust is required for adding new "friends".
+{%- endtrans %}</p>
+
 <h2>Morphmix / Tarzan</h2>
 <i><a href="https://www.freehaven.net/anonbib/cache/morphmix:wpes2002.pdf">[Morphmix paper at Freehaven]</a> 
    <a href="https://www.freehaven.net/anonbib/cache/tarzan:ccs02.pdf">[Tarzan paper at Freehaven]</a></i>