Update: This Tuesday Google officially launched the feature. Has it changed the way you search? Let us know in the comments!
We've been reading about it since October, but today is the first day that a few member of the BFM team came across the test being run by Google on search results, which show a preview of websites. Users can get a glimpse of what a website looks like before actually clicking on a result. It will be interesting to see what effect this has on click-through rates.
My guess is that better designed websites or ones with clear messaging will have an advantage - if searchers use the feature. They may just skip it all together, since it does not seem to work that quickly and requires the user to click on a small magnifying glass next to a result to activate the feature. Once activated, the user only needs to hover to other results to see previews.