Follow & conform with Linked Data W3C Project.
Wikipedia paraphrasing 4 principles of Linked Data Tim Berners-Lee memo:
* Use URIs to identify things that you expose to the Web as resources.
* Use HTTP URIs so that people can locate and look up (dereference) these things.
* Provide useful information about the resource when its URI is dereferenced.
* Include links to other, related URIs in the exposed data as a means of improving information discovery on the Web."
A few sites to review:
http://bit.ly/86rKQ (Berners-Lee TED pitch)
"Linked data is essential to actually connect the semantic web. It is quite easy to do with a little thought, and becomes second nature. Various common sense considerations determine when to make a link and when not to."