Although keeping a private blog is a good idea for many families, there are some private blog disadvantages.
One disadvantage to a private blog is that you will have to personally approve every new visitor to your blog. This can be time-consuming.
Another private blog disadvantage is that visitors cannot find you in natural search. One of the fun things about a blog is the opportunity it creates to connect with people in other states and even other countries. Not everyone on the internet is trying to steal your identity- many would simply enjoy reading about your experiences. Creating a private blog means that they will never find you.