For each username found on any given old.reddit page, go through their profile and find the latest 100 comments/posts. Out of these <=100 contributions, append to the end of their username which subreddit they frequented the most.
For each username found on any given old.reddit page, go through their profile and find the latest 100 comments/posts. Out of these <=100 contributions, append to the end of their username which subreddit they frequented the most.
