Unlike most bands, they don't have a specific style. I'm very surprised that some people call them emo because their only song that can actually be classified as emo is "Lying Is The Most Fun A Girl Can Have Without Taking Her Clothes Off". They were also influenced by blink-182 which is falsely labeled emo by many people. Instead, they cover almost every style of rock and made their own style by combining pop-punk and techno.
They are sadly given a bad name by poser fans, teenyboppers, and dumbasses who put "! At the Disco" on their MySpace account. I actually once saw "Bowling! At the Disco-182" WTF?
Me: Yeah, but you're ruining their image by putting ! "At the Disco" in your name. You're also ruining Bowling for Soup and blink-182.
B!ATD182: YER JUST JEALOUS BECAUSE YOU LISTENTO SHIT LIKE BAD RELIGION!!!!!!!!!!!!!!!!!!!!!!!!
Me: I listen to everything, dumbass. that includes Panic! and Bad Religion.
John (Aghast): Yeah, I saw you trample that old lady on the news.
Stephanie:"I know, it's gonna be awesome!"