넌 완벽한 홍보대사야.

A: My smart phone has revolutionized my life.
B: It has “taken over” your life would be a better assessment.
A: It’s useless to fight technology! Come into the light.
B: 넌 완벽한 홍보대사구나, for social networking.

A: 스마트폰이 내 인생을 혁명적으로 바꿨어.
B: 네 인생을 “가로챘다”가 더 맞는 평가겠지.
A: 테크놀로지를 거부하는 건 소용없어. 빛의 세계로 오라구.
B: You’re the perfect poster child 소셜 네트워킹을 위한.

[Additional expressions]
*revolutionized my life
changed everything in my life / made my life so very different
*It has “taken over” your life
It’s taken control of your life / You’ve surrendered your life to it
*would be a better assessment
is a better explanation / is more accurate / is closer to the truth
*It’s useless to fight technology!
There’s no point to fighting against modern technology developments!
*Come into the light.
See the truth. / Accept reality. / Figure out what the facts are.
*You’re the perfect poster child for
You are the ideal example of / You really do represent
*social networking
socializing on the Net / making friends and meeting people on the Internet