Tell HN: The "Doogie Howser" Startup Test
If your startup has eclipsed "Doogie Howser" in Google Trends, you can feel satisfied that you've crossed the first line and are well on your way to becoming a household name.
For example, Posterous passed the Doogie Houser test in mid-2009:
http://www.google.com/trends?q=posterous%2C+%22doogie+howser%22&ctab=0&geo=all&date=all&sort=1
And Mint.com in late 2007:
http://www.google.com/trends?q=mint.com%2C+%22doogie+howser%22&ctab=0&geo=all&date=all&sort=1