Since text blogs are used only for experimental reasons, I set them up in a way different from the way I set up my main blogs. First of all, I ensure that they are not listed in public listing of blogger, not visible to search engines; not appear in my Google+ or blogger profile page. Atimes, I also set them up in a way that no one else can view it except me.
Luckily, Blogger allows us to set up any number of blogs for FREE and also makes it easy to create a Blog on Blogger with the settings highlighted above.