Bruises was a minor hit in 2008, though its use in an Apple commercial makes it better known than its chart placing (no. 50 in the UK, no. 101 in the US) would suggest.
According to a Guardian profile, Chairlift have been trying to live it down ever since:
As they gazed out on billboards in oversized sweaters and faded denims, it was easy to dismiss them as just a fashion band with great cheekbones. But their new-found recognition was a misleading calling card for what the band was about.