Who is PG referring to as the fastest growing YC startup?

And the real questions: why not a log scale for the vertical axis, and what <i>is</i> the vertical axis measuring? [is it $&#x2F;month, $&#x2F;week, total revenue, profit?]

my guess would be instacart, goldbely or teespring. But there are probably some B2B contenders I haven&#x27;t thought of

anyone know who launched around july 2012 or earlier?