Stickers are things you put on a character's trophy base in the Subspace Emissionary and you can also have fun withe the stickers by going to the vault, selecting trophies and stickers, and then either going to the Sticker Album and admire your stickers or you can make cool pictures by arranging your stickers in any way you want.
i think you use them to get health and fight!! i think
There are 700 stickers in Brawl
gives you stickers
You can use stickers by going to the subspace emmasary. At the bottom of the screen, there is a rectangle that says "stickers". Push that and it will take you to the sticker screen. There you can place stickers on the bottom of charters trophies. You can only use stickers in the subspace emmasary.
You get random stickers by grabbing pieces of paper while brawling.
544 trophies, 258 cds, and 700 stickers
To upgrade charchters on the subspace emmissary. you can do this by puting the stickers on the players base in the map menu
There are 694 stickers in Super Smash Bros. Brawl. http://www.gamefaqs.com/console/wii/file/928518/52357
Find them. Or. Make a stage where you can hit sandbags over and over and stickers will appear.
they increase certain stats on your characters in subspace emissary
they are stickers which can be used to upgrade or improve your characters abilities in sse
You can't unlock Boo, but you can get a trophy for him, and many different stickers.