This is part of an Anthology called An Aura of Familiarity: Visions from the Coming Age of Networked Matter, commissioned by the IFTF as part of/asociated with their Coming Age of Networked Matter research stream.
It also contains stories by Cory Doctorow, Rudy Rucker, Ramez Naam, Bruce Sterling, and Madeline Ashby; with illustrations by Daniel Martin Diaz. Worth checking out, wouldn't you think?
The image on the right is by Diaz, and is called Binary Predator.
No, the thumbnail does not do it justice, click through to see it in a larger version!
Tor.com has a rather magnificent story by Ben Burgis, called Contains Multitudes (yes, that's a Walt Whitman quote) online for your delectation.
It plays in a world where humanity fought, and nearly (?) lost a war with a cosmic invader (some kind of yellow squid, it appears). The peace/cease fire conditions were that a generation of children would serve as breeding vessels for the next generation of aliens (again, see the title...).
The relationship turns out to be less parasitic and more mind-meld, human and Other co-joined, talking more "we" than "I"...