I know WHAT an exact match domain (EMD) is.
The problem is that I don't know HOW to quantify the number of exact matches for a domain. It's never bothered me before because I was using WT for keyword search (for buying and/or developing). Anyway, I buy a domain if I like it rather than because it's an EMD.
Now I'm thinking of selling some domains, but people keep discussing EMD figures and using them to help determine the value of a domain.
Anyway, if you search in EP, you'll see plenty of debate and discussion about whether EMDs are worth paying extra for. It all makes me think of PR and how pointless that is, and Alexa, which IMO is rubbish.
But the potential buyers are nearly always asking for number of exact matches, PR, and Alexa rank.
Edit - my original final sentence didn't make sense so I've removed it.
Meanwhile, I think I'm a step forward now I've refound the AdWords Traffic Estimator tool.