As an American teenager in 2007, I also feel weird about it. That whole era of my life, as far as music, was getting really into what was coming out of the French scene, New Rave (like Klaxons), and starting to listen to various WARP and SKAM artists.
I remember first finding the "Waters of Nazareth" EP they had posted on their Myspace, then listening to Mr. Oizo, Kavinsky, Surkin and SebastiAn too (just to name a few, I have a few of the Ed Rec. compilation albums). I grew out of liking much of what Justice was doing after their "Cross" album since they seemed to drift into a more polished (or maybe even poppy?) sound when I was initially attracted to the grit/bit-crushed sounds they had earlier (I still love DVNO and D.A.N.C.E. though, those are classic tracks). I think I had some bootlegs of their "I Love Techno" 2006 live set. Quick fun anecdote with that one is that my now partner also had that rip back when she was in high school and we only ever got to talking about it, since we had both moved on a bit in our lives, because she loved the Teenage Bad Girl remix of Scissor Sisters. It was fun to re-converge on something I thought no one around me would ever know about independent of me showing it to them since almost none of my IRL friends dig my musical taste.
Also, that picture of them with their gear unplugged is pretty damn hilarious.
Cheers from over on this side of the planet, anyhow.