In Korean, "to follow" doesn't have a native equivalent, therefore the English word "follow" is just pronounced and written in the Korean way, "팔로우".
"to follow" (on Twitter only) = 팔로우 하다 [pal-lo-u ha-da]
= 팔로우 감사합니다.
Thanks for reading. Feel free to tweet me in Korean at @ever4one!