Often you will see spectators purposely avoid the angry supporter, avoiding the confrontation and the problem. At least by saying "don't be an egg", rather than more adjectival curse language we Northlanders would probably tend to use, it can keep the situation lite.
Another use of the campaign which has been mentioned to me is by using technology to further take the edge off the situation.
If you go to YouTube and search "Don't be an egg" you will find the video RLN has created, from there it can be emailed to a supporter who you feel would benefit from watching such a thing.
If I was a child and wanted my parents to chill out on the sidelines, this campaign would be perfect for casually saying to mum and dad "check this cool video out", before joking that "it looks like you guys".
RLN has really taken the charge on anti-sideline abuse and they should be applauded for it - not snobbed and told the problem only exists in league, because it doesn't.
We have been given the tool to make change, now the challenge is using it to make a difference.
Watch the "Don't be an egg" video here: