Do you key www before your blogger add?

I have come across quite a number of blog which repeat the same mistake. You don't have to key the www in front of your blogspot address.

For example,
xxx.blogspot.com - correct
www.xxx.blogspot.com - not necessary

Some people assume that for every internet address www is default. This is not true. During the first invention of world wide web, almost all the website carry the www address. Until today, there is not necessary anymore. In technical terms, with or without www is just a configuration only.