I was also working on a little site. I have not gone very far with this, but one thing I can do assert that I am the creator of this resource by linking a variant of my name to the ontologize.me site: Dr Peter M Sefton. All it does so far is what you see there, it can decode a URL-encoded RDF statement into English. In this case it will tell you that this page has a creator identified by a URI.
So far I have not:
Made a wizard/bookmarklet to create these links/
Worked out how to get the same page to serve machine-readable RDF.
Note that we need different URLs to talk about metadata for a whole
resource, versus asserting that a term, such as Potter syndrome, is an
instance of a disease in an ontology, hence the
/meta/ in the URL I
have used above.