add short-and-sweet as a separate desideratum from cut-and-pasteable

[Imported from Trac: page NewCapDesign, version 6]

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