@Verbeia suggested that I might respond to a question by someone interested in finance, and I would like to do so, but I only saw her message by accident when I was poking around in my user area, and now I can't find it even thought I saw it only one hour ago. I've looked everywere in my user area, and still can't find it again. This seems like a SE problem. I never got anything like "you've got mail," and I saw the question only because I was rummaging around. Furthermore, I don't know how to send Verbeia a message to thank her and find the question again.
This is probably an inexperienced user issue, but it seems like SE should have told me about her message.
Ok, I found Verbeia's message again, by going to the little "StackExchange" button at the upper left of the web page. I still would like to know how to send someone else a message of some kind. Do you do it by making an @username comment anywhere in MMA SE?