In addition to the 3 main benefits you listed, another is the fact that maintaining a blog and writing articles as an employee of Magen allows you to build confidence with the community - which will only lead to more business. I don't feel like it would be "information leakage" at all. Since the purpose of Magen is to *know* and be the company that others would come to for help and expertise, then being "out there" in the community is the best way that others will gain confidence in the company and it's employees. Even though tid-bits of "free" info will be given away by the employees of the company via the employee blogs and articles, the company will benefit in the end as it, and it's employees will be seen as someone who has the expertise and trust of the community. Not just with a company such as Magen, but with any company.