Question: Why am I seeing a URL change?
Answer: Over the coming weeks you might notice that the URL of a blog you're reading has been redirected to a country-code top level domain, or "ccTLD." For example, if you're in Australia and viewing [blogname].blogspot.com, you might be redirected [blogname].blogspot.com.au. A ccTLD, when it appears, corresponds with the country of the reader’s current location.
Question: Where will I see this change?
Answer: We routinely launch limited updates, so in the coming months you will see ccTLDs in additional countries.
Question: Why is this happening?
Answer: Migrating to localized domains will allow us to continue promoting free expression and responsible publishing while providing greater flexibility in complying with valid removal requests pursuant to local law. By utilizing ccTLDs, content removals can be managed on a per country basis, which will limit their impact to the smallest number of readers. Content removed due to a specific country’s law will only be removed from the relevant ccTLD.
Question: How will this change affect my blog?
Answer: Blog owners should not see any visible differences to their blog other than the URL redirecting to a ccTLD. URLs of custom domains will be unaffected.
Question: Will this affect search engine optimization on my blog?
Answer: After this change, crawlers will find Blogspot content on many different domains. Hosting duplicate content on different domains can affect search results, but we are making every effort to minimize any negative consequences of hosting Blogspot content on multiple domains.
The majority of content hosted on different domains will be unaffected by content removals, and therefore identical. For all such content, we will specify the blogspot.com version as the canonical version using rel=canonical. This will let crawlers know that although the URLs are different, the content is the same. When a post or blog in a country is affected by a content removal, the canonical URL will be set to that country’s ccTLD instead of the .com version. This will ensure that we aren’t marking different content with the same canonical tag.
Question: How might ccTLDs affect the blogs I visit?
Answer: If you visit a blog that does not correspond to your current location as determined by your IP address, the blogspot servers will redirect you to the domain associated with your country, if it’s a supported ccTLD.
Blog readers may request a specific country version of the blogspot content by entering a specially formatted “NCR” URL.
NCR stands for “No Country Redirect” and will always display buzz.blogger.com in English, whether you’re in India, Brazil, Honduras, Germany, or anywhere.
For example: http://[blogname].blogspot.com/ncr – always goes to the U.S. English blog.
This special URL sets a short-lived cookie (session and/or a short life time) that will prevent geo-based redirection from the requested domain. This applies to all web browsers and all Operating Systems