I’m having the same issues.
GET search/tweets using the ‘geocode’ parameter looks like it works ‘normally’ more often when searching with a smaller radius. For example 1km in major cities
By normal, I mean only geotagged tweets are returned with longitude and latitude values under the geo key - this is how it’s been working for ages.
Higher radiusus for whatever reason seem return all tweets with ‘null’ for geo keys and instead defaulting to the user’s location.
I really hope this is a bug that can be fixed, rather than a change in how geo tweets are being returned using ‘geocode’. For my project, it won’t be feasible to loop through thousands of non geo-tagged tweets just to get a handful of ones that are geotagged.
You can see the issue I’m getting at http://www.socialbearing.com/geo (JS console shows tweet objects before error)
Any info/help appreciated
Thanks 