How to get interest in an anonymous blog?

One thing to do is keep posting as if you have a million viewers already an write quality posts. Don't write about how great your breakfast was and why your dog pooped on your couch. Find a good topic, plan it out. [Planning it out is the most important step], and just write. Keep writing, slowly people will trickle in. If people like what they are reading, they will tell their friends.

Once you have a "few" viewers, find major blogs with similar topics like yours, and apply to be a "Freelance Writer" to write posts on their blogs. So on the bottom of the post they usually allow redirects to the Posts authors main page. So these allow more advertising to your site.

you should tell to your friends about your blog on social networks and share the content their, ask them for a guest visit :)