Want to know if your ‘HTML application’ is part of the web? Link me into it. Not just link me to it; link me into it. Not just to the black-box frontpage. Link me to a piece of content. Show me that it can be crawled, show me that we can draw strands of silk between the resources presented in your app. That is the web: The beautiful interconnection of navigable content. If your website locks content away in a container, outside the reach of hyperlinks, you’re not building any kind of ‘web’ app. You’re doing something else. Palm WebOS applications are awesome, but they are not part of the web. An app might interact with data on the web, and they are built with similar HTML, CSS and JavaScript technologies. That’s great, but they are not a connected, interlinked part of the web.

Understanding the architecture of a thing is important in understanding the ontology of a thing.

A response to this, with more discussion here.