If it does achieve mainstream popularity, song owners may not take kindly to its gray market approach to song discovery.

ENGADGET: Whyd mines YouTube, Soundcloud and others for songs Spotify can't deliver (hands-on)

Brooks, on the other hand, failed to achieve the mainstream popularity of some of his contemporaries.

WSJ: Works of Flavin and Brooks at Greenberg Van Doren

Will adventure racing achieve the mass popularity of running, mountain biking and other outdoor sports?

FORBES: Hypothermia for Fun and Profit

Despite Intel stepping up efforts to fuel demand, ultrabooks have been unable to achieve the desired level of popularity.

FORBES: New Platforms & Ultrabook Designs Could Fuel Intel's Mobile Computing Plans

Its veto is important, since the only way the PA can achieve a ceasefire in Gaza is with the consent of the Islamists: their present popularity rules against any attempt to impose a truce that they oppose.

ECONOMIST: Doomed diplomacy? | The