why blog?

i've blogging for quite a while... i dun know why i blog.. i blog because i wan to be heard? or what.. i really dun know... but i believe its because of some unknown reasons... but i do know... i am a techie person.. and blogging is cool.. keke.. anyway...many big organization... mostly IT organization started to have their own internal blogging intranet communities... so as it was told... blogging increase the author self awareness and better in expressing oneself in un-edited form...sharing of views and ideas...blar blar....i wander how effective will it be to be use as a productivity tool in an organization...there are already forums and emails... most likely the employee will spend most of the time musing himself...self absorption like me...haha... anyway.. my coy is coming up with our own blogging communities.

some big IT company blog...
sun microsystem , microsoft, ibm