Should Learning Professionals Blog?

This is a very interesting question: Should learning professionals blog? I discovered a very important post on the issue. You can read it at http://www.downes.ca/post/38555. The post makes out a case for learned and learning professionals to share their thoughts and ideas through blogging. It raises certain questions whether a professional, if s/he were a true professional, could find enough time to indulge in blogging. Then the poster Stephen Downes goes on to say that if learning professionals were to substitute their offline activities, where they waste a lot of time, with more productive and efficient online activities, they could easily find the extra time required for the purposes of blogging. Moreover, the positive aspect of blogging is that it needn't always be very consistent and very meticulous, even if it is a professional's blog.