I have published a post Custom domain for New Blogger, however, I myself never use it for my blogs.
Reasons: In the first place, I don't want to bother myself with renewals. More important, I am now 57 years old, going on to 58. If I am lucky and live to 100, there will be still 42 years for doing the things I enjoy. But I know there must come a time when I will no longer be around to renew domain registrations and hosting fees if I use custom domain. When that happens and I use custom domain, my blogs will go 404 (page not found). I have hope that my blogs will still be on the web when I go to a better place and am now doing some testing to see how it can be done. I used Gmail addresses for most of my blogs which may be a mistake as Gmail policy is that if you don't sign into your Gmail Inbox for 9 months or more, your Gmail address will be deleted. Refer to the following for more details:
Are blogspot.com URL forever?
Will Blogger blogs be deleted? Test.
I will however have to accept the risk that my blogs get marked as a spam blog (splog) and get deleted by Blogger. But if I am still around, I can try to do something about it.
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