70% of the screen is empty space. All of the menus are hidden away. Every several posts you scroll through you see an advertisement of some sort. When you like or reblog a post, it will show you more advertisements completely at random. When you try to remove said advertisements, you get a sarcastic message written by the people who run this website. When you click on a link, instead of opening the page it has a popup window that loads really slow. You can’t save messages; you can either delete them, or answer them & they automatically get deleted. There’s no way to reasonably hold a long conversation because posts eventually become unreadable when enough comments have been added. Elements from the mobile version have been reused on the browser version for absolutely no reason. When you hover over the logo, it flashes rainbow colors. Some of the advertisements are framed in a Microsoft Office clip art style image. Noticable site bugs occur on a daily basis, almost as if nobody is testing any of these updates.
The website I just described is popular blogging site Tumblr, and millions of people use it.