As mentioned, standards come about because somebody decides to adopt a practice found elsewhere to make their own informaton 'tool compatible'. Case in point, Jakob's Law of the Internet User Experience

Users spend most of their time on other sites. This means that users prefer your site to work the same way as all the other sites they already know.

I found the quote as part of a nice collection of theories of the week. Good idea, wide range of knowledge presented, well executed. Nice clean website.

Like the logo.