In many investor presentations, startups want to educate the audience first on a big trend that is happening. But, especially in consumer/internet, people catch up really quickly and you will loose the audience attention and your credibility of you spend time and slides on explaining things that everyone understands. 

Some examples I can remember (some of them from my time at McKinsey):

• Home pages
• Sticky eye balls
• Portals
• Market places
• Social networks
• Social media
• Viral videos
• Location-based services
• Online video and the growth of bandwidth
• Sharing economy

Smart VCs read the same blogs as you.

Art: Student at his desk, Pieter Codde, 1630