Right now we can't use a hosted blog with the address blog.storename.com or storename.com/blog
This would look very professional and would actually encourage people to check out the blog.
To create your Sub domain-you can go to DNS of your Domain panel and add a Cname record.
The details of the Cname are as follows.
Points to: ns.zepo.in
After the above steps are implemented the sub domain will be created.
In order to link your blog to the above sub domain, a hosting space has to be purchased for hosting the blog.
The blog once hosted should be linked with the above sub domain from the DNS panel.