Personally, I love it when companies launch blogs for specific products or services. If I’m a user of that product or service, I usually find the blog to be a great resource for furthering my knowledge and I notice that it keeps me more engaged as a user. As long as it’s done well.
Along those lines, Google Analytics has just released it’s own blog for their web analytics application. The blog is only three posts deep right now, but posts like this one on calculating what a visit is worth are the kind of posts that not only Google Analytics users can benefit from, but anyone who uses web analytics.