It's naive to think that organisations, City included, don't monitor public forums and social media platforms for information that directly affects their business.
Apropos of not much, I have to regularly check a forum on behalf of a client in the hospitality industry, it's similar to Tripadvisor but it features information about prostitutes, rating their 'performance' but also the meeting places. My client needs to know if their establishment is mentioned so it can alert staff to be on the lookout for working girls (and boys).
It's the bleakest site imaginable, think Bluemoon match day forum stripped of the warmth and patient understanding but with added lingua franca and explicit details of shenanigans.