[Xenalyte]

I'm led to understand that if a woman doesn't indicate preference (as you're doing quite nicely), it's acceptable to refer to her as Ms. Some may take umbrage, but they're usually the ones who didn't tell you Mrs. to begin with, and expect you to just know it. ;)

[Under the Radar]

I do assume the other women prefer "Ms." absent any other indication. The issue I was making above at the end of my tiny rant was that it is hard to determine sex from first names alone. So how do you refer to a stranger who is named "Chris Roe"? Mr. Roe? Ms. Roe? Just "Chris Roe"? It is impossible to be properly formal absent other information in these circumstances, which is why I would like to see us bring back titles in business settings. :)