I can only think of two situations where this interaction would be valuable, neither of which is demonstrated in the sample:
1. where the current content of the page was still visible and in some way helped contextualize the search results, or
2. where the original page was dynamic and took a really long time to load, such that navigating back to the point of origin would be problematic
And there are plenty of less fancy but well-proven methods for addressing both of those. So I'd pass on this implementation.
I'm Eugene and I'm an IA for IGN Entertainment. Prior to this, I spent
several years as an Interface Designer and IA at EarthLink. I've lurked
for quite some time and posted a couple job postings here and there, but
I figured now is a good time to get more involved.
I'd like to get your opinions on overlay methods for displaying search
results. For example, check out http://www.google.com/cse/samples/overlay.html. I don't know if it
really has value for static pages, but with media such as audio and
video I envision this allowing the user to multitask effectively without
cutting off the media stream.
But is search so standardized that something like this could become a
Please post any other examples you've come across.