IT folks get a lot of knocks for poor communication skills. In response we typically react by increasing the number of emails we send out and the announcements we post on our company's intranet. Ultimately we are shocked to learn all this extra effort doesn't improve the perception of IT as poor communicators.
This is like the comic situation of meeting a foreigner who doesn't speak your language and assuming that they will surely understand you if you simply speak louder. The sad reality is that when people refer to our poor communication skills they are often referring to the quality of our communication rather than the quantity.
Simply increasing the amount of poorly done communication doesn't make things better. We need to change our style instead. Email and intranet posting can be great ways to communicate, just not for all situations.