There's some interesting back-and-forth in the tech press between Om Malik and Marco Arment, about Google Keep.
Malik's passionate original post states:
After seven years on Google Reader went up in smoke, Malik doesn't trust Google to keep an app alive.
Arment, the creator of Instapaper and co-creator of Tumblr, says it's a sucker's game to trust a free service and users shouldn't be caught flat-footed when an app they've invested time in is killed.
Arment points out all the dangers of a proprietary monoculture, while Malik enumerates the reasons not to trust Google.
Google isn't in the curation business- it's in the selling search data business.
(Google is also not in the cyborg visor business, despite what you may have heard lately- they're in the collecting-search-data-from-your-cyborg-visor-t0-sell-to-advertisers business.) When you're shopping for a product, it's not a bad idea to get it from a company whose product is that product.
It's also not a bad idea to pay for it. My Hotmail account may be "like a piece of spinach stuck to your teeth from 1997" according to a friend of mine, but they can't take it away from me this year at least- it's paid for.