[MarketingSherpa] Top 4 Subscription Marketing Lessons from the Adult Content Industry for Mainstream Sites

"Lesson #1. Raising Profits with Cross-sales Interstitials Between Competitors
Lesson #2. Improve Search Marketing Conversion Rates With Targeted Landing Pages
Lesson #3. Mass Portal Sites Can Use Boutique-style Niche Offerings to Raise Conversions & Lifetime Value
Lesson #4. Lifetime Retention Starts With Your Banners"