Currently trying out to see the response of the PH community, and take it from there, we'll surely learn something and I'll be able to tell you about it. Have a look at Wingtap and let me know what you think :) I'm launching today and I'm curious about the feedback.
From my experience, it's very specific for each product/brand. What works for one, not necessarily works for another. For example, social media channels.
Still, organic traffic/SEO, e-mail marketing and PPC bring us the highest conversions.
Depends on the industry, target audience, business requirements and alot more other things. You can just do a research on your industry and see how your competitors are approaching things, this can give you a clear picture for marketing strategies.
Wingtap