I still hear it in my head as Diva Husband because Dear Husband sounds condescending somehow - I know, it's all in the tone. And also, because I use it on the Diva site so it makes sense.Yup. Jilly is right. DH = Dear Husband and DS = Dear Son and DD = Dear Daughter. We use these all the time at Skidiva. I would assume that DW = Dear Wife.
http://www.urbandictionary.com/define.php?term=dh
Of course ... I thought it meant Diva Husband for my entire first year ... and, yeah, dickhead has been known to work as well!