Reddit FPL is the subreddit of Fantas Football managers. But the english premiership not the US football version. The r/FantasyPL has 120,000 subscribers. Its a place to discuss Premier League Fantasy Football Teams, transfers news, or anything else that might be helpful.
Ive found it a useful site but getting my comments published is highly annoying. You get a time warning if you post too often.
There is a decent reddit fantasy football review
Plus the main site for Reddit FPL