diff --git a/NewCapDesign.md b/NewCapDesign.md
index 70e4244..74daddb 100644
--- a/NewCapDesign.md
+++ b/NewCapDesign.md
@@ -45,6 +45,12 @@ established sense). To make them real, we need to:
 
 ## other features
 
+ * Short and not so ugly. This is important to enable cut-and-paste (see 
+   below), but also just because people are suspicious and averse to long
+   and ugly URLs.  See #217 for notes in which dozens of people have 
+   spontaneously complained about the current URLs.  By contrast, tiny
+   URLs such as tinyurl.com, bit.ly, etc. are ubiquitous nowadays; users
+   have no problem with those -- see Twitter.
  * Enable convenient cut-and-paste. If caps are too long they'll wrap in
    email. If they contain lots of word-breaking characters then you have to
    drag after you've double clicked (this is probably ok). If the word-broken