I am an emo fan myself, but my roots are in punk. I had a Blink 182 CD on the other night at work (working restock at Target overnight SUCKS) cuz I needed something peppy that I could ignore and this guy comes up to me:
Him: "I love Blink!"Me: "Yeah, they are good live. Funny as hell."Him: "Cool. I love punk."Me: "Um, not really punk man. They're pop."Him: "POP!?!!" No way man. They are real punk."Me:

and walk away
For real, I have been to Blink shows and punk shows, and you can tell punk by who is there. Blink concet attendees average age is 15 and buy out Hot Topic before going to the show. Got my *** kicked in the pit at Rancid/Anti-Flag. Good times:)
But crap like SUM41, Simple Plan, Sugarcult (who SUCKS live), and others that call themselves "punk" are just lying to themselves.