A monster post by Juan Martitegui, PPC mastermind and guy who created MindValley Hispano.
Juan goes over some obvious and very non-obvious ways to reduce wastage in paid acquisition campaigns.
While "reducing waste" may not seem as sexy as "acquiring milllllllions of users," in fact it's a necessary best-practice that can save cash-strapped startups tens of thousands of dollars in marketing money.
Actually, who doesn't want to spend less on acquisition?
Anyway, a very tactical guide with about a dozen specific to-dos that you can implement right now.