However, I think this trend is likely to release the browser of its responsibility of an application platform. Since it was never intended to be that platform, all the complexity that went along with it just detracts from its value as a platform for retrieving and displaying information. In the role of information delivery I think the browser is a wonderful thing. Features like the new WebSlices and Activities features of IE8 are information-centric features.
Just like any employee, if we let the browser do the job it was hired to do, it can really excel at it.