In the next week, we're shutting down Google Blogsearch "Ping". Blogsearch itself was deprecated in 2011, and now it's time to turn off some of the remaining services associated with it. This change has no effect on crawling and indexing of websites. We continue to support sitemaps and feeds as ways to tell Google about your content, and, of course, Google search will crawl publicly accessible websites for new & updated content automatically as well