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There are no easy answers to your questions unfortunately Mozboy. You'll need to decide on a strategy first. Start by asking these types of questions: What are your objectives: awareness, exposure, engagement, conversions, or customer retention? Who is your target audience? Where do they like to hang-out online? Where does your competition invest time and resources? How's that working for them? I think the answers you come up with will shed light on your best option(s).