I am going to start calling this kind of nag from a website a account wall. This particular example is from a post on Medium which I cannot read without signing up for a Medium account. Why? Well as it always is its for “””engagement””” reasons, signing up for an account makes you more likely to “””engage””” with the service. It means they can possibly send spam you notifications and try to upsell you some subscription service.
Folks, please stop using Medium for your blog posts, go sign up for a WordPress.com account instead so your readers don’t get barraged with Medium’s incessant attempts to increase “””engagement”””.