P&G fought online advertising, and online advertising won Procter & Gamble last month slashed its digital ad spend over bot concerns. But columnist David Rodnitzky. The 12 Most Common Direct Mail Mistakes.And How to Avoid Them. Successful direct mail doesn’t depend on fancy, four-color design or "creative" copy. Why Wealthy Affiliate Is The Best Internet Marketing Course For Baby Boomers The 80/20 rule is commonly thrown around in entrepreneurship and…