Couldn't get to their website today, but I was wondering a few things about Kakao Talk 1. Can you lock out the access to it from others who might get their hands on your phone? Like lock your chat conversations, contacts etc? 2. Is there an option enable/disable notifications from automatically coming to your phone every time a new text msg arrives? If left enabled, does it impact battery by any noticeable amount? 3. How does using it appear on your phone bill? Just the same as any other web browsing? I'm curious about that, because using the app requires your phone number. I don't want any of my usage of Kakao appearing on my phone's SMS, and I don't want phone numbers used by kakao appearing on my phone bill.