There are some excellent Youtube videos on window cleaning, that are informative, up-to-date, unbiased and from people who have 'Earned the Right' to offer their advice.
If you are newbie, I would stick with those.
I personally don't like anyone who offers advice on something (potentially serious) they have absolutely no knowledge of, i.e RSI.
I know people who make very good money from Youtube and it's only fair that if the op is trying to 'Advertise' again, where others have to pay, then he should be banned for a short while.