The kakaotalk client on Mac is okay but the Windows client is full of ads: ads in friend list, ads in chat, ads in the corner of the screen, ad under your cursor.
It annoyed me to no end. So what’s the solution? Find a way to block it!
I used a nifty tool called TCP View (very old, but still works). It can resolve domains from IP address and is not as heavy as Wireshark 😉
I looked up the domains kakaotalk.exe connects to and found the following, so I added this to /Windows/System32/drivers/etc/hosts
#Block kakao ads
And voilà! No more annoying ads!