Wing Sticker

Wing stickers are blue, wing-shaped stickers introduced in August of 2010. They are Soulbound, and can be collected every day. They are listed in the Game tab of the player's inventory.

Uses
The Wing Sticker does not have any current use. In the August 23, 2010 "Ask the Admin Thread," Lanzer hinted they will be used as a "new currency," and to "expect a place to use your stickers for cool rewards." Because of this, it is rumored that these stickers are not related to the Frontier Skies event (which occured during the same month), but instead are a reward for users who log in daily.

How to Obtain a Sticker
Currently, the only way to receive the wing sticker is to click on the blue sticker icon to the left of your avatar in the header. This can be done daily to receive a new sticker each day.