Danish startup Artland is building a social marketplace for the art world and its key players: Galleries and professional collectors, while also hoping an app-based approach helps onboard a new generation of art buyers. The team’s overarching mission is to make art buying more accessible and thus widen the sales pipe. The core problem being that galleries aren’t typically short of artworks to hang on their walls. What they really need is more buyers’ eyes in front of exhibited works. On a more abstract level, galleries do probably also need to up their sales game to compete in an era of selfie culture and trivial digital generation providing plenty of low cost, taste-customized…