Increases appeal of Android devices and provides another advertising opportunity ("find place to eat" -> bam! hyperlocal recommendation. Restaurants would pay significant amounts of money for that type of targeted advertising)
What I find particularly interesting about it is the potential to produce genuinely relevant advertising. As a simple example, imagine I ask my smartphone where I can find the nearest fast food joint and it tells me there is a McDonald's around the corner. It might also serve an ad that says there is a Burger King one block further away and if I go there and show the ad I will get free fries and a drink with my sandwich.
There are some very interesting possibilities here that we have only begun to scratch the surface of.
Now if they could make this a social thing, where real, authenticated, non-paid people recommend a good place to eat or get my suit tailored, I would be on board. Sadly, there is no money in that sort of service, as Yelp found out pretty quickly.
For whatever reason businesses that love their margins more than their customers find it's much more convenient to astroturf services like Yelp than to actually provide something worth buying.
And services like Yelp always seem to find that it's more lucrative to extort money from businesses in exchange for reorganizing their ratings.
I'd love to have a way for regular people to recommend things that was invulnerable to astroturfing but I have no idea what it would look like.