Bring this back on the contributing guide.

railties/guides/source/contributing_to_ruby_on_rails.textile

@@ -252,7 +252,7 @@ Once you're happy that the pull request contains a good change, comment on the G
 I like the way you've restructured that code in generate_finder_sql, much nicer. The tests look good too.
 </blockquote>
 
-If your comment simply says "+1", then odds are that other reviewers aren't going to take it too seriously.
+If your comment simply says "+1", then odds are that other reviewers aren't going to take it too seriously. Show that you took the time to review the pull request.
 
 h3. Contributing to the Rails Documentation