With Twitter reducing its search history to four days, it is a challenge for applications that are dependent on search results, that went not days but even months back. Several applications have taken on the challenge to fill this void and are building search indexes on top of Twitter. Topsy is one of them and it's sharing its results as an API.
This is the third part of our series How to Add Postcode-Based Proximity Search With Open Data. To find a nearby business, you need to know: nearby what? In this article we show you how to implement the common application of nearest locations to a postcode provided by a user.