It's unfortunate that we continue to see common misconceptions about the merits of blogging. Blogging may have gotten a bad reputation over the years, with (it seems) everyone who has an opinion having a blog, sharing their educated (and sometimes uneducated) opinions to the “blogosphere.”
Although that particular kind of blogging can be unprofessional and (many times) unimportant clutter, company blogs are actually a great way to upload fresh, relevant content to your website.