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This weekend I built a simple Google Chrome extension at Startup Weekend NYC. The idea was to create a professional heads-up-display that you can use to see your connections all over the web. I ended up having to hack my own company search feature for LinkedIn since they don't have an API method for that available yet. I ended up using their internal autocomplete API.
I've been in touch with some developers there and from what I hear a Company Search is a very frequent request and they plan on offering in the future.
Let me know what you think, feature requests and bug reports welcome.
This is dope. Using this now...