How to DM someone who posts a message that I cannot respond to online?

[fmsinc]

Can one of you fine folks tell me how to DM someone who posts a message that I cannot respond to online? 

I assume DM means direct message? 

Thanks, 

David

[Lois Baker]

DM = "direct message", some folks use "PM" = "private message"

Click on the individual's user name in any post or reply; you'll land on their profile. 

To the right of their username (usually about mid-screen), you should see a blue button that says "Message" -- click on that, and you'll be able to send them a private message.

If/when they reply, you should see a notification -- look to the top right of the page; to the left of your user name, you'll see an envelope.  A badge should appear there if you have any unread messages.  You can set your profile to receive an email whenever a DM is sent to you:  Click on your user name (top right) => Account Settings => Notifications (at the right, on the "Overview" tab)