The X of Y

People which have a hard time defining what their start up does, find it easy to use another start up as a metaphor for what they do:

- "The Groupon of vacations"
- "Like Twitter, but with Video"
- "Like Tumblr, but cooler"

This is something you wouldn't do on your website, right? So why would you introduce yourself like that in person?

Try to come up with what that company does (Go to the "about" in that company's site), and replace that with the company name:

- "Daily deal on the best vacations" (Vacations Groupon)
- "A social video information stream" (Video Twitter)
- "The coolest way to share everything" (Cooler Tumblr)

Still simple, much better.