Alexss·vor 3 Jahren·discussThis is interestingly close to the off-repeated line that on a forum 10% of users comment and 1% create content.
Alexss·vor 5 Jahren·discussIt's marginal ROI which is negative for 80%. Overall ROI for advertising is negative ROI for 2/3rds of brands (still v. high, obviously).
Alexss·vor 6 Jahren·discusshttps://realnotcomplex.com/ has a wide range of free textbooks and video courses collected