Much research shows that there is no problem with have stickers on any form of helmet such as ; motor cycle helmets, bmx/shateboard helmets and any other form of crash helmets.
No Stickers will not weaken your helmet, put as many on as makes you happy.
Yes they do depending on the stickers
If you like.
The Stickers on the Stanford Cardinal helmet is a large red S with a green California Redwood in front.
2009
http://www.helmethut.com/College/Michigan/moorhead.html
Each player will bring helmet stickers from his school/team and give them to other players on the all-star team to wear on their helmet. I guess they do this to show respect to the other players/schools from their all-star team.
You can't the stickers don't weigh anything they're virtual
Many factors cause John and Lorraine party to get out of control which was the final cause
Probably 10-15 stickers on anything is already too much
They are pride decals: http://www.sptimes.com/2005/10/08/Sports/Sticking_points.shtml
With stickers because anything that you add on to a set will increase the price of it.