OpenCalais is a web service that creates rich semantic metadata for the content submitted by users.
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Use OpenCalais's historical employee count to better understand their growth and spending over time.
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Use OpenCalais's historical monthly uniques as a proxy for mindshare and web traction.
Use OpenCalais's historical Twitter followers and likes to better understand their social media traction over time.
Use OpenCalais's mobile downloads and app ranks to evaluate the performance of their mobile apps.
How I'm using Twitter to acquire 100 uniques a day for my startup (trevorstarick.com)
OpenCalais Updates Tagging System To Be More Social And Recession Friendly