The New York duo Cults’ short history provides a handy primer for the way this blogwave trend of bands works now. The first single from the nascent act was promoted on the taste-making Gorilla vs. Bear site in April 2010, and met with rapturous approval from the downloading cognoscenti. Fawning praise followed. To record their debut LP, they enlisted Shane Stoneback — the engineer behind the eminently bloggable forerunners Vampire Weekend and Sleigh Bells — and were signed to Lily Allen’s imprint of Columbia. Next stop: minor fame! Their music perfectly encapsulates the dark, ’60s-style girl pop of the current nostalgia-mining, romance-hardened zeitgeist brought on by bands like Vivian Girls and Best Coast. “You Know What I Mean’’ is a swooning waltz set to weeping strings and echoing finger-snaps — a “You Don’t Own Me’’ for the Flip-cam generation. True to the early pop blueprint, even the happiest of the crushing-out, hand-holding soundtrack stuff here — like potential Song of the Year contender “Go Outside’’ — is couched in a bitter, familiar sentiment: Love rules. Love hurts.