added some section headings (per wilde's suggestion)

pages/about.html

@@ -1,3 +1,5 @@
+<h2>What is I2P?</h2>
+
 <p>I2P is an anonymous network, exposing a simple layer that applications can 
 use to anonymously and securely send messages to each other.  The network itself is 
 strictly message based (ala 
@@ -8,6 +10,8 @@ All communication is end to end encrypted (in total there are four layers of
 encryption used when sending a message), and even the end points ("destinations") 
 are cryptographic identifiers (essentially a pair of public keys).</p>
 
+<h2>How does it work?</h2>
+
 <p>To anonymize the messages sent, each client application has their I2P "router"
 build a few inbound and outbound "<a href="how_tunnelrouting">tunnels</a>" - a 
 sequence of peers that pass messages in one direction (to and from the client, 
@@ -27,6 +31,8 @@ to find the other client's inbound tunnels efficiently, but subsequent messages
 between them usually includes that data so no further network database lookups 
 are required.</p>
 
+<h2>What you can do with it?</h2>
+
 <p>Within the I2P network, applications are not restricted in how they can 
 communicate - those that typically use UDP can make use of the base I2P 
 functionality, and those that typically use TCP can use the TCP-like streaming