Highlighting URLs

[Peter Bloomfield <PeterBloomfield MindSpring com>]

Balsa currently highlights a URL in a plain text message by setting it 
in a distinctive color, and indicates when the cursor is over the URL 
by:
  - changing the cursor to the `pointing hand';
  - showing the URL in the status bar at the foot of the main window.
In Gnome-2, text will be shown in a GtkTextView widget, which would 
make it possible to add more bells and whistles. For instance, the text 
could be underlined when the cursor is over it, or changed to yet 
another color, or both. However, we shouldn't necessarily make such 
changes just because we can! Has anyone seen a really effective 
treatment that Balsa could adopt?