Added FAQ and personal donation addresses.

www/index.html

@@ -19,7 +19,7 @@
         <h3><span id="blocksleft">...</span> blocks left</h3>
         <h3><span id="timeleft">... remaining</span></h3>
         <p>
-          Click/tap on the rows for more statistics.
+          Click/tap on the rows for more statistics - <a href="#faq">FAQ</a>
         </p>
       </div>
 
@@ -31,10 +31,92 @@
 
     <hr/>
 
+    <div id="faq">
+      <h2 style="text-align: center;">Halving FAQ</h2>
+
+      <p>Q: What's a halving?  Does that mean I'll have twice/half as many coins?</p>
+      <p>
+        A: No, a reward halving is when the fixed subsidy for miners gets cut in
+        half.  This has happened twice before, and will happen many more times
+        until all bitcoins have been mined (21 million).
+      </p>
+
+      <p>
+        Q: Who decides when halvings happen?  Can this be stopped?
+      </p>
+      <p>
+        A: Satoshi embedded the halving algorithm into the consensus protocol of
+        the Bitcoin network.  It can only be changed if every user of the
+        network decided to change it as part of a hard fork.  One of Bitcoin's
+        core offerings is its fixed and unchangable monetary policy, so it's
+        exceedingly unlikely that it is going to be changed.
+        <br/><br/>
+        The reward function (in Bitcoins) is
+        <code>r(h) = 50 / (2 ** floor(h / 210000))</code>, where h is block height.
+      </p>
+
+      <p>
+        Q: I noticed some of your measurments here are different than those on
+        other countdown clocks.  Why is that?
+      </p>
+      <p>
+        A: Since mining is a probabilistic process, it's impossible to predict
+        when new blocks will be mined.  <em>On average</em>, new blocks are
+        mined every 10 minutes, but this can vary a lot.
+      </p>
+
+      <p>
+        Q: Can I use this event to make money?
+      </p>
+      <p>
+        A: Probably not.  But it's been observed that crypto bull markets have
+        happened in the (roughly) year after each of the previous two halvings,
+        so take that how you will
+      </p>
+
+      <p>
+        Q: Bear markets?  Does that mean I should buy Bitcoin?
+      </p>
+      <p>
+        A: That's up to you.  I'm not your financial advisor.  Don't invest what
+        you can't afford to lose.
+        <!-- But also, buy Bitcoin! -->
+      </p>
+
+      <p>
+        Q: I have another question for you
+      </p>
+      <p>
+        A: I can be contacted at the following addresses...
+        <ul>
+          <li>Matrix: @trey:foobar.style</li>
+          <li>IRC on Freenode: treyzania</li>
+          <li>Briar: <a href="briar://ac22od43vo66zsclxawfcd63ltweyfbfbqgk2w67vswpxshuwckr6">briar://ac22od43vo66zsclxawfcd63ltweyfbfbqgk2w67vswpxshuwckr6</a></li>
+        </ul>
+    </div>
+
+    <hr/>
+
     <div id="footer">
       Made by <a href="https://tr3y.io">Trey</a>
+      <div id="donations">
+        <p>BTC bc1qj4tw5zuw3cl2wy5jw0lt4jghksrex8dnndp3vn</p>
+        <p>BTC legacy 3MgDA5Ukc6waaaK6BVndLdQBtKnYhZHuTK</p>
+        <p>DOGE DBDgYidXBpSCkFhhAZV8Lfp4NuMDD4SNxk</p>
+        <p>ETH 0x08CA026673F0dD458fef8d7f9Df72Ad105558eA3</p>
+      </div>
     </div>
 
   </body>
 
 </html>
+
+<!--
+    The student asked his master, "Is this good for Bitcoin?".
+
+    The master, looking up from his tea towards the rising sun, said,
+
+    "Yes, this is good for Bitcoin."
+
+    And it was good.
+  -->

www/style.css

@@ -10,7 +10,11 @@ body {
 
 a {
     text-decoration: none;
-    color: darkblue
+    color: darkblue;
+}
+
+a:hover {
+    text-decoration: underline;
 }
 
 #blocklist {
@@ -18,6 +22,22 @@ a {
     max-width: 80em;
 }
 
+#faq {
+    margin-left: auto;
+    margin-right: auto;
+    max-width: 48em;
+}
+
+#footer {
+    margin-left: auto;
+    margin-right: auto;
+    text-align: center;
+}
+
+#donations {
+    font-size: 10pt;
+}
+
 .blocklistentry {
     width: 100%;
 }