As the bean counters might say, if advertising doesn’t improve the bottom line, it’s really just art. And expensive art at that. And the agencies that improved their clients’ businesses the most this year have been announced, with perennial Effie performers Colenso BBDO and DraftFCB on top with 22 and 16 finalists respectively, followed by the bolter Barnes, Catmur & Friends on ten and DDB on nine.