Robert Ben Madison just took it farther than most. It has a potential population crisis, because all but four of their citizens are male. But citizens are recruiting over the Internet. The Talossans aren't about to rise up with arms and secede from Wisconsin. We try to be independent in other ways.
Talossan independence is cultural and political.
Talossans write books about their connection to Indian mounds, invent lexicons of the entirely synthetic Talossan language, and have elections about every eight months. They have odd titles of nobility and a slightly skewed sense of humor in common. There is a foreign policy, mainly consisting of whether to recognize other micronations. The nation is not looking for money and doesn't sell passports. Its denizens often say in their citizenship applications that they see Talossan politics as a leisure activity.