I certainly recognize the irony of suggesting that Google might help improve competition.
That said, there aren't many players in a position to provide actual competition to Pinterest like Google can. The obvious concern is where you draw the line at anti-competitive if Google tried to do the equivalent of what they did with Yelp ratings.
In the context of Google being the alternative, this is sad and funny at the same time.
Hacker News in the abstract: The web needs more decentralization.
Hacker News IRL: Let Google own every vertical.