Happiness when editing (or playing nicely with the clipboard)
Like the phrase now stolen by Kellogg's, its the simple things in life that are often the best ;)…. either that or it's simple things for simple minds :).
I had a nice experience when updating our internal wiki, setting up my personal page to have a list of my important work urls. When doing this, I was (naturally enough) copying and pasting a url to put into EditLive. I was happy to see the insert link dialog (pretty standard for html editors), include the url string that I had inserted into the clipboard. 
This is a nice way of having the system do good sensible defaulting. It was smart enough to only do this when the clipboard was a url string. It really is the little things that make a difference :).
February 21st, 2007 at 11:25 am
[...] For a couple of years now, Ephox has been very successfully using a wiki to provide communication within the company and helping to bridge the gap between our two offices on opposite sides of the pacific. Central to the success of the wiki has been the successful integration and configuration of EditLive! as the editor. It certainly helped that we have a high quality editor with lots of attention to detail but the most important aspect was the amount of attention we paid to correctly configuring the editor. [...]
September 17th, 2007 at 5:16 pm
[...] this with easy linking to clipboard URLs and you have some cool tricks to improve your [...]