diff --git a/buy_coffee.html b/buy_coffee.html
index efe7538..51856f7 100644
--- a/buy_coffee.html
+++ b/buy_coffee.html
@@ -23,10 +23,11 @@ shelter for people who
 have been displaced by violent conflict.
 </li>
 <li><a href="http://www.vic.org.kh/">Veterans International Cambodia</a> makes and distributes 
-wheelchairs to people to face challenges in mobility.
+wheelchairs to people who face challenges in mobility.
 </li>
-<li>I've been making <a href="https://github.com/phtan/technologist-journal/search?p=1&q=tip&type=">a list</a> of 
-other people who welcome money.
+<li>I've been making <a href="https://github.com/phtan/technologist-journal/search?p=1&q=tip&type=">lists</a> of 
+other people who welcome money. (I call those lists "tip jars". Some 
+people collect stamps. I collect tip jars.)
 </li>
 </ul>