While social media platforms readily provide information regarding the impact of your posts, they are more reserved when it comes to details about the people who make up your audience. Only a few demographic data points (age, gender, geographic location) are available, which do not allow for an in-depth analysis of your communities.
However, within the framework of advertising campaigns, you can target individuals based on their stated interests, which can be valuable if you want to expand your subscriber base or design an advertisement (see the factsheet Understanding and investing in different forms of online advertising). Additionally, social media platforms provide information about your audience's connection habits (connection times, type of device used, etc.). This helps determine the best time to post content and on which device (desktop or mobile).
It is possible to study more data collected by social media through external solutions. These solutions "scrape" data from social media - that is, extract and store it in another IT environment for analysis or use. While not systematically illegal, this practice raises questions in relation to the European regulatory framework for the use of personal data (see our factsheet on the topic), particularly regarding the right to object, to be informed, and to give consent. Furthermore, this practice is highly disapproved of by platforms and may result in being banned from them (see the testimony of researcher Marie Ballarini in the TMNLab café listed in the resources below).
More than profiling data, social media provides an opportunity to intersect topics (and therefore audiences), by bouncing off current subjects or trends - as demonstrated by community managers of major brands who know how to respond humorously to current events, or even mock their competitors...