You got a Homestuck trading card!
Bryce (@Brytator) gives these out at many cons - try to collect them all. Just ask for one!
Not sure how to play the trading card game? Click here for the rules and instructions.
Huge Homestuck fan? Check out some of Bryce's other Homestuck stuff:
AlterniaFM.com plays Homestuck Music 24/7 and has live shows and giveaways often!

Pesternote - The Homestuck Social Network

Homestuck Animated Live Wallpapers!
More than 20 adorable animated wallpapers for your Android device.

Spritequest - Homestuck Flappy Bird!
We have many other Homestuck apps available!
Some non-Homestuck stuff:

Tesla Steamworks on Etsy
We sell really cool Steampunk stuff! Check us out.
Bryce.ml
Bryce's personal landing page for business and person contacts. Donations accepted!
Some of the newest trading cards have a special code that can be used to give you tons of free stuff! Look for this code, it's usually on a sticker on the back of the card, but sometimes is on the front (bottom) of the card.
To unlock special characters in SpriteQuest, tap the SpriteQuest logo in-game 5 times. Enter your code and click "OK". Star a game by tapping any character, and your new character will be applied.
To unlock a digital trading card on Pesternote, log into your account on a computer. Click "Me..." on the top navigation bar, and click "Trading". Type your code in the redeem menu in the top left blue box or click "Show Tools" and type your code.