Ask HN: Review our API - A single API to rule them all

We're in a very alpha stage of developing a "semantic" API, that has some powerful capabilities:

* Querying Linked-Data and other ontologies.

* Easy pipelining of multiple APIs.

* Math, logic, graph-traversal, IO, string manipulation, data mining primitives.

* A templating language for easy creation of mashups.

* NLP and semantic analysis of text and web pages.

We'd like to pick your brain about it: your general opinion, what do you think this can be most valuable for, what would be the barriers for using it.

An introduction blog-post: http://blog.headup.com/2011/01/introducing-semantinets-api/

The API's wiki: http://wiki.headup.com/index.php?title=Knowledge_Graph_API