At early stages, when owner had not censored results yet, you could use it to extract potentially interesting data that represents most popular views on different topics among population.

IDK about extracting some connected info about specific person. May be you will be able to get some result occasionally, but it could be not real data, but what most people think about it.

To seriously analyze things you talk about, you need completely different system, known as "expert system", that is not that "expert systems" that are just a name for same ANN thing, but completely another type of data processing, when algorithm build a structures with connections and classifications that allow receiving answers like "who is the people Bill Gates meet more often" or "list of corporations that spent money on satellite surveillance with sums and considering possible proxy companies". However, development of that kind of systems was abandoned nearly 20 years ago in favor of ANNs we see everywhere today.