Best of the blogs: True, everyone in IT knows about Linux — but an equally honest statement is that “not everyone knows what it (and other open source technologies) actually costs, how and where best to implement it, which business models have been successful in the market,” writes Matt Asay. He breaks down some of the ways to think about the actual cost. Columnists’ corner: Too many companies put that disaster recovery plan on the back burner until it’s too late. To that end, Oliver Rist outlines six steps to get you started: test, don’t be cheap, store a weekly copy off site…and the rest are here. “Yes, getting all this done is a month or more of real work. But having it in place when Godzilla steps on your server room: priceless.” Podcasts: We delve deep into small business wireless security in the latest Emerging Enterprise Podcast. And another edition of the Storage Sprawl Podcast went live this morning. This ‘cast recaps Storage Networking World Spring, which saw the emergence of new business analytics, large capacities in small footprints, and ease-of-deployment. New to our site: Our newest blogger David Marshall, author of Virtualization Report, has lived and breathed virtualization for over six years. He’s already got a handful of posts in there, on Parallels Workstation for Mac OS X, and shipping a data center overseas via drag-and-drop, among others. The news beat: BlackBerry’s email service makes its debut on a Treo 650 and users gain access to both email and the Blackberry Enterprise Server without a dedicated device. Helio bundles Yahoo search and content into phones, and IT dignitaries offer definitions and predictions for Web 2.0. Technology Industry