of course. But shit like this just clogs up the forums. There have been more and more of these "SAC", "Cough", "Hmmhmm", "Check it now", "OMG What a steal" threads in the last week..
Most people know about SAC/WM and have desktop alerts etc, so it's just not necessary to post them all the time - PLUS, (and 99% of people know what it is, but) the more people that know about is, the quicker items go and the higher chance that there is nothing left when you go to buy something.
Bottom line - outside of any other reason, it's against the site rules...