If you want to link your tumblr blog to google buzz, you need to identify your blog to your google profile.
First you’ll add the site to your google profile by editing your google profile. Scroll down to the links section and add a custom link to your tumblr blog.
Next you need to add a line of code to your tumblr blog to tell your google profile that the tumblr blog really belongs to you. To do this you just add an XFN link to the <head> section of your template. The XFN link should be formatted as follows:
<link rel=“me” type=“text/html” href=“http://www.google.com/profiles/your.username”/>
You’ll want to replace “your.name” with the correct url for your google profile. This will identify your blog to google the next time google crawls the site.
If you want to speed up the crawling process, you can use the google Social Graph API. When you log in, you will see a list of links to sites you own, click on the “recrawl” button next to your tumblr blog.
If everything worked, you should be able to add your tumblr blog to the connected sites section of buzz. Google claims this works for any site with content that is published via Atom/RSS, you can read more about it in the Google Buzz API docs.
-kap
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