I am just wondering what all of the different types of response systems were. I know of friction stickers and o ring but i dont know the names of the others. Thanks!
Starburst
Hybird (Refers to one half starburts and one half o-ring)
String
Silicone (Silicone friction pads exist, but there is also just regular silicone applied to the recesses next to the bearing seat)
Ok thanks now i actually know what im using to make my yoyo come back!
Here i all the response system:
Silicone
k-pad
dif-e-yo pad
silicone sticker
hybrid
shims
flush silicone
silicone o-ring
GHOST pad
Starburst
brake pad
adjustible starburst
small k-pad (for mighty flea)
flowable silicone
K2J silicone pad
chaz pad
born crucial ghost pad
turning point k-pad
Hot red SILLYYcone
And more…
Happy Throwing! =]
Shims arent a response system in a yo-yo. 
Please be careful what you said. 
http://yoyoexpert.com/product/yoyojam/shims/index.php
Happy Throwing! =]
They’re not responce systems, they make the gap bigger, so your yoyo is less responsive. But its still not a responce system.
It’s not technically a response system. Which yo-yo would have a tiny shim as a response system?
Edit: Ha! See! You just got pwned! 
Anyways…try to read more carefully next time.
No need to “pwn” eachother guys. ;D
But its fun, lol.
I was just sayin’ that shims aren’t really responce systems.
Johnny T. mentioned pwning.
Oh, I thought it is, but its not. Sorry Guys, and you too Johnny T.
Happy Throwing! =]
No worries, everyone makes mistakes.
I know.
Happy Throwing! =]
Hehe. Its alright. We all can make countless mistakes.
…Got Pwned!!! :D. Ha! I’m just playing with you.