What monetary relationship does Riot have with the website Polygon?

I am asking for full disclosure riot. As of right now the gamers of gamer gate are pillaging the old emails and articles written by polygon to see if the claims of you bribing a journalist website for better reviews of your game.

https://twitter.com/WilliamUsherGB/status/533752178570047488

Is this true? What is your relationship with the current press, and do you disclose any attempts of gifts or flattery to them in exchange for reviews? Did you hire on anyone from Polygon for said reviews?

Articles listed from Polygon regarding Riot games:

https://archive.today/VA9xa https://archive.today/5hPHLhttps://archive.today/njNXU https://archive.today/cAsMC https://archive.today/Q7Mp2 https://archive.today/51LD6 https://archive.today/jS5Rt https://archive.today/lYpSR https://archive.today/dkoIX https://archive.today/gsnK2 https://archive.today/cewXWhttps://archive.today/5hPHL https://archive.today/cewXW https://archive.today/zVtqn https://archive.today/Zbkvp https://archive.today/Q7Mp2 https://archive.today/51LD6 https://archive.today/jS5Rt https://archive.today/avVgO https://archive.today/s3Mvg https://archive.today/gsnK2

These are all the articles adoring riot after the date of this email, from the Polygon staff. Has anyone from that website been hired on or given any money for reviews?

If you have: What department are they currently working in? (*Cough lore cough)

If this isn't true and you haven't done any of what is mentioned please share with the community what your companies ethics and standards are to the press.