Getting started with Twitter API
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I'm developing an app whereby users tweet me (@Eamorr) and I respond with the phone number of the nearest business based on the geolocation embedded in the tweet.

I'm not really sure where to start and thought I'd ask the community.

I'd like to make this as real-time as possible - i.e. where there is minimal delay between the user tweeting @Eamorr and them receiving the phone number. Is node.js a good solution for this?

Btw, my server runs php, but I'm language agnostic, so any suggestions are most welcome.