Premium features and gated content are not inherently bad. We all want to make money. Gaudy and intrusive pop-ups, banners, and things that try to pull me to that content is bad.

The difference between being pulled into it and seeking content myself is an important one. Services that annoy people into doing what they want may get short term results but are generating a lot of ill-will for the medium and long term.

This website even has reasonable advertisements in the side-bar. No floating videos that auto-play, no ads injected right in the middle of the content I'm reading. Just a plain old ad on the right side of the content.

When I was using this site a lot back in 2009, it really was ad-free. Even more minimal than what it is now. Each exercise page had a super-small dithered GIF image of a person doing the exercise. Those seem to be gone now.

Still not a pop up