I recently saw someone new suggest their doubts about blogging. Personally I find writing a diary a great therapeutic device.. great for putting some sense into the soup of my thoughts... so that they don't just keep swirling around and around so much (at times).
So then on top of that to blog your diary - even snippets - seems such an adventurous thing to do. I guess I think of it as lighting the blue touchpaper... one of those fireworks might go boom.
But then again I think there's a 99.99999% chance of nothing appearing to happen... tho I think some people can benefit from your blogging without you even realising.