Vanessa Fox on official Google blog talks about the power of community in blogging. Linking to those sites that are most relevant from the readers point of view and commenting on relevant blogs helps in increasing the relevancy of the blog. Content as always is the most significant thing of all. Good content and other bloggers will link to it.
About search engine indexing the blog Vanessa says, “if you have a blog for your business, you could provide a link from your main site to the latest blog post. You can also let search engines know about the pages of your site by submitting a Sitemap file. Google, Yahoo!, and Microsoft all support the Sitemaps protocol and if you have a blog, it couldn't be easier! Simply submit your blog's RSS feed. Each time you update your blog and your RSS feed is updated, the search engines can extract the URL of the latest post. This ensures search engines know about the updates right away.”
Though the information stresses a lot on links and content being of importance, however, it actually helps in reviving their importance.
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