I use a different email address for my Kijiji transactions, as infrequent as they are. My other emails either tie me to my last name (which isn't common), or my web site, etc. I'd just rather that the buyer not know my real name (so I came up with something that describes my unique shape of my azz.)
And I'll usually give a couple of options - I live in the NW, work in the SW, can meet you someplace in between, etc. and if they're willing to work something out, then they're less likely to be wanting to case my house. Or so I tell myself.