Philipp over at Google Blogoscoped is one of my favorite people in the blogosphere. I just mentioned yesterday what a great job he does. Today, Philipp created and Danny posted about what can be best be described as, "so many Google Blogs, so little time." Philipp's service creates a single feed for all of Google's many blogs.
Now, not having the coding skills that PL has, I experimented and tried another service and within minutes created a single SEARCHABLE source with Google's many blog feeds (did I miss any?) using Blogdigger's "Group" feature.
My Google Blog collection is available here. It even has its own feed. You can search all blogs by date or relevance and/or view/search one blog at a time via the "Group Roll" located on the right side of the page. I've noticed a few small problems and have contacted Blogdigger's Greg Gershman to help find and fix. More about Blogdigger Groups here.