Brad Smallwood, head of measurement and insight at Facebook told a reporter for the Wall Street Journal that “it takes about a year to get the results of one campaign.” That line appears as the final statement in a piece about how Facebook is trying to woo back GM who earlier this year pulled 10 million dollars worth of ads off the social network. Let’s revisit that line again; “it takes about a year to get the results of one campaign.”  A year? As in 365 days worth of paying for ads to run on a very popular website but I shouldn’t expect to see any results until I’ve burned through the whole 10 million dollar budget? Are they crazy? Maybe, because in the same article Mr. Smallwood also says, “It is a myth that Facebook…