Google quietly updating its Blog Search engine in real time

“We’re doing a better job of choosing the blog posts to include in clusters,” Hylton says. “We’re also working on changes to expand the number of posts we consider for clustering.”

One of the algorithmic changes is aimed at making sure the home page clusters reward the freshest and most authoritative blog content. Within any cluster, Google wants to find the posts that people are talking about the most.

“We have a lot of ranking signals. We’ve been tuning the ranking and clustering algorithms to make better use of those signals. One important changes is that we’re processing new links much faster, so the post that breaks a story and gets a lot of links is more likely to become the lead story.”