Is it possible to run Trello on IE8?
I think it'd be a great way to share project information with clients, but I work with more than one client whose internal OS/browser standard is XP/IE8, with no plans to change in the immediate future.
You (or your clients) can use Trello on IE8 after installing the Google Chrome Frame.
In fact, if you attempt to use Trello with IE8, you'll get a message that gives you that advice:
Note: You should be able to install Chrome Frame even if you don't have administrator privileges on the computer that you're using.
If you (or your clients) aren't able to install Chrome Frame, and aren't able to use another browser, then you (or they) won't be able to use Trello. Sorry.