Google uses snapshots provided by Snap, who also uses them to power its search engine. You may remember Snap from the annoying little bubbles that pop up every time you hover over a link in many blogs, hoping to "enhance links with visual previews of the destination site".
It's easy to move between search results by using keyboard shortcuts (up and down arrows) or the mouse wheel. To go next set of results, you can press Page Down. Unfortunately, it's not that easy to actually visit a search result, which is the main purpose of a search activity. You'll need to either double-click on a result or click on the snapshot from the sidebar. Google will open the result in a frame, so you can't see the URL in your browser's address bar or link to the page unless you remove the frame. Google had to use frames to save the context of your search, but the result is very bad.
For images, Google shows in the sidebar a snapshot of the page that embeds the image, a link to the site and information about the image size. Now it's much more difficult to find the image and you need more clicks to find your way. The video section lets you play videos in the sidebar, but fails to properly indicate the source of external videos and Google continues to host third-party content. The frames from SearchMash team up with Google Video's frames to make your life miserable.
The flashy SearchMash has a list of recent searches, but it's not that easy to find it.
All in all, the Flash interface doesn't bring enough value to compensate for the many usability problems. While it's easy to switch between results using keyboard shortcuts or the mouse wheel, that doesn't justify using Flash, especially if you realize that most people won't know about that. It's also very difficult to link to a search result, the thumbnails are too small to be useful and only slow down the page.
Some things I'd like to see in Google's search interface from this experiment: link to the homepage of a site, search inside a site, keyboard shortcuts for switching between results, a list of recent searches.
{ via TechCrunch }