Basically, KakaoTalk is an application to chat like WhatsApp, Line, or Blackberry Messenger. As we have to know other's phone number or ID, we can connect it each other. We can use the "shake" feature just if there's other phone in the environment using that feature too.

Example:

You and your friend, both have KakaoTalk app and are in the same place (side by side). You want to add them and use the "shake" feature, then your friend have to turn on their feature too. You both shake your friend together, and your Kakao will connect automatically with you friend's.

And I'm currently learning Korean, as I really like Korean Wave; music, drama, variety shows, etc. I have KakaoTalk too, it's sbayugiri :D

Hope this helps!

hi helian, of course it is ok. but what your id is? hope we can be good language partner and friends.

thanks sbayugiri and mila, i've start to use kakaotalk. its features is smiliar to chinese social chat "weixin" on smart phone

hi sbayugiri, i will plus you on kakaotalk.

hey bingo, i am also learning korean too! is it okay if i add your kakao talk? ^^

For tania

   few chinese use it. I planed to plus friends by shaking function , but nobody to connect.