If you access any of the Blogger hosted blogs from India, Google will automatically redirect you to the corresponding blogspot.in address.
To give you an example, if a blog’s address is abc.blogspot.com and you try opening that page from an IP address in India, Google will send you to abc.blogspot.in. A similar redirection is happening for individual article pages as well.
Original page: http://abc.blogspot.com/page-name.html
Redirected to: http://abc.blogspot.in/page-name.html
How to Prevent Google from Redirecting Blogs
If you are visiting a blogspot.com blog and Google is redirecting you to the country-specific blogspot.in domain, you (as the user) can prevent that redirection by adding /ncr to the blog URL. For instance, if the blog URL is abc.blogspot.com, the new URL would be abc.blogspot.com/ncr and it won’t redirect to any other address.
The Problem with Redirecting URLs
The above change is applicable only for free blogs that are served from blogspot.com and does not affect Blogger blogs that use a custom domain. Also, Blogger takes care of the redirection part so none of your existing URLs should return a 404.
That said, there’s one significant downside I can think of. All your blog pages effectively have two different URLs now and that could dilute your Google juice.
Site visitors in India will see your blogpsot.in URL while visitors outside India will be served the original blogspot.com URL. However, if another website links to your .in address and a visitor outside India tries to access your blog via that site, they won’t be redirected to your original .com address. And that’s bad for your site from the SEO perspective.
The other problem is that this change will completely alter yoursocial analytics. If your original blog post got ‘n’ likes on Facebook, the new count will be ’0? since the URL has changed. Thus social sharing sites like Twitter, Facebook and even Google Plus will see that redirected page as a new web page.