I think that's a pretty huge oversimplification. In terms of dollars, SAFM's growth alone is larger than Yelp's gross revenue. Apart from that, those numbers tell nothing about cost- if Yelp's customer acquisition costs rose more than the revenue, then they are just paying a dollar for $.50. Further, if the social media sector of the market rose 200% overall, then Yelp is actually underperforming the market.
There's not a single "best" indicator of growth. You have to examine multiple facets of a company's performance- revenue, costs, overall market performance, sector performance, etc. to understand a company's growth.
There's not a single "best" indicator of growth. You have to examine multiple facets of a company's performance- revenue, costs, overall market performance, sector performance, etc. to understand a company's growth.