Not reading the whole thread

I've noticed recently a few complaints about people not reading a whole thread. I think it's perfectly acceptable to answer an opening post without wading through lots of other responses. Sometimes one might be repeating what someone else has said but I don't see that as a problem.

So, I'm looking for an acronym for "I haven't read the whole thread!" Will IHRTWT do? Read it as "aye-her-twit" ?