Well I tried that, It gave me more contacts as it added people that are from London, or London connected subreddits. The problem here is anyone on reddit can join any subreddit which means even though I'm part of r/startups that doesn't mean I'm a startup founder. So basically with your tool we can search people on reddit from a specific subreddits that are connected to the specific keyword.
Question does it also search based on posts on reddit?