I have a plan to make a blogger blog (blogspot), and to protect the .com version of my blogger blog, i'll buy the .com domain version of it. Let say my blogger blog is myblog.blogspot.com and the .com version is myblog.com, so which is better to forward ? myblog.blogspot.com to myblog.com or myblog.com to myblog.blogspot.com ? Note: since this is will be my 1st project of blogging (light niche with decent earnings probability), so don't answer me by saying "why not blogging with wordpress and host it with your own domain ?"
You are on the right track. but, your question isn't. www.domain.blogspot.com will be forwarded to www.domain.com Thats all!
I heard that kind of domain forwarding doesn't recognize/allowed by Technorati. www.postsecret.com is the example of ".com forwarding to blogspot.com" and postsecret is one of Technorati's fav blogs. But also many blogs are forwarded contrary from case above, so which one better ? the consequence from it etc.