I tired about 10 random ones and 3 were real links. So are they approx 30% full already of the 4 character urls? I guess you better not shorten a url to a pag

I tired about 10 random ones and 3 were real links. So are they approx 30% full already of the 4 character urls? I guess you better not shorten a url to a page you don't want to be public, because then the address will be easy to guess.