Most of the writers do use the common social media tools to get help with writing. Each writer would have specific flair for topics of their interest. Those writers would have books or magazines related to the topic. There could be some who are tech savvy and depending on the type of articles they would know where to get access to reference subjects. This question will allow you to know whether he/she will be referring to the right site or will be able to bring out genuine or relevant contents. You could also make sure of their capability to handle topics assigned.