Update FAQ.

doc/src/FAQ.html

@@ -447,7 +447,9 @@ inserts/updates because we have transaction overhead. Of course, MySQL
 doesn't have any of the features mentioned in the <I>Features</I>
 section above. We are built for flexibility and features, though we
 continue to improve performance through profiling and source code
-analysis.<BR><BR>
+analysis.  There is an interesting web page comparing us to MySQL at
+<a href="http://openacs.org/why-not-mysql.html">
+http://openacs.org/why-not-mysql.html</a><BR><BR>
 
 We handle each user connection by creating a Unix process. Backend
 processes share data buffers and locking information. With multiple