It has been about a year and a half since my  post, which continues to be quite popular. I immediately started writing a followup, and naturally never finished or published it.
Since I’ve been getting questions about it lately, I hereby present my entirely unorganized notes that would have been used to actually do some research and finish the followup:
amplify has some improvements, but you need to slightly change the API call… need to compare it to the older one
calais updated some stuff … do I need to relook?
new features on alchemyapi
other changes
* note evri non-commercial use and that you can’t store longer than 2 weeks
* look into opencalais having ’semantic links’ (read the comments)
new APIs
*Wingify doesn’t really do what I want but may be of interest to others
; API details if you contact them…
* let’s you do some simple classification based on giving it some training data; there are
a number of sites like this but not what I’m looking for
comment on original blog post by Andraz Tori
* no api, but
* Apache UIMA incubator project
*
and – two examples with no public APIs
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