One of the longstanding trends of modern technology is to make it easier and easier to perceive fine-grained content.

WSJ: How E-Readers Change the Way We Read | Head Case by Jonah Lehrer

Like Chrome, it breaks tasks up into different processes, but instead of separating at the page level, Gazelle breaks individual page elements into different processes, allowing content from different servers to be isolated and ultimately providing fine-grained security controls.

ENGADGET: Microsoft's "Gazelle" browser detailed -- it's more of a research project