It all depends on your use case. If user streams are not releavant to you, you may use the `filter` endpoint instead of `sample`, and focus on keywords describ

It all depends on your use case. If user streams are not releavant to you, you may use the `filter` endpoint instead of `sample`, and focus on keywords describing a relevant niche for your analysis. In case you want to limit yourself to tweets geo-located in a certain location, you have to be aware that the bounding box filter of twitter is buggy: it will return you tweets geo-located outside of the desired area, and you are not sure to be getting all tweets.