What is your unfair advantage? Write 1-5 unfair advantages, and each on their own line.
Example (For StartitUp):
Insider information
Expert's backing
Intellectual property
Large network
SEO Ranking
Critical Mass
If you are building something like Facebook or Linkedin, your unfair advantage wouldn't even be there until you have tens of millions of users. Then the unfair advantage would be the massive user base + data.