But none of this matters to users. What matters can be described better with a picture than with words:

What matters is that we users can now put content where we want it. This is the first step. Facebook has to be eying Virb and Myspace’s level of customization, and making plans to copy their features. Once they introduce tasteful styling options for your profile page, they’ll have exceed every other social networking website in ease of use, customization, features, and uniform look. Facebook Applications is a great way to offload the work of adding new features–why add a feature when there are people out there who can do it for you? Now it’s all about the platform and API.

You can read more about what this means for Facebook’s long term vision at Techcrunch’s They are the Anti-MySpace.