An author writes, "InvestmentBubble's ads are targeted at inexperienced investors who have lots of disposable income." In this sentence, the ads are not the targets; they're the arrows. The passive construction "are targeted at," like its near-twin "are targeted to," obscures the situation in a fog of inactivity. Make the verb active, and the confusing mist dissipates:

Right: "InvestmentBubble's ads target inexperienced investors who have lots of disposable income."
Right: "InvestmentBubble aims its ads at inexperienced investors who have lots of disposable income."