I recently saw a website that required the user to double-click an item in a scrolling list to 'open' it for editing. It surprised me, as I don't usually think double-click is appropriate for websites, but users did pick it up quickly.
What characteristics of an interaction make it more appropriate to violate the "don't use double-click" standard? What mitigating factors might their be?
In this case, I think:
- the similarity of metaphor to "opening" a desktop item may have contributed to users grokking the action quickly.
- the user population primarily uses desktop apps, and secondarily uses web apps. They are used to double-clicking (and may be 'default double-clickers', people who double-click on everything because sometimes single-click doesn't work).
What other factors might be contributing one way or the other?