Plenty on Naver, where the most popular comics all have over 100k+ (their counter only goes up to 99,999). Which is cool when you consider how over there, you don't need to subscribe to easily keep up with the comic, so the actual number of readers may be even higher. It's more like a "like" button for the entire series rathern than a sub button, in a way.
On Tapastic, you can just go here and see for yourself that there is only one comic at the moment that fits the criterion. (Genuine question, is there a discussion to be had here?)