1. You see a hot girl at the party, come to her and say "I'm great in bed" - Direct marketing 2.You see a hot girl at the party and ask your friend to say to her "My friend is great in bed" and you pay him a drink - That's referral/affiliate marketing 3. You see a hot girl at the party. Somehow you find her number and call her tomorrow - That's telemarketing 4. You see a hot girl at the party. She comes to you and says "I heard you're great in bed" - That's good branding. 5. Your friend can't satisfy girl and calls you to help. That's technical support. 6. You go to party, and in front of house where party is you start shouting "I'm great in bed!!" - That's spamming.