Using the Firefox Add-on GooglePreview, you can have thumbnails displayed next to each search result for both Google and Yahoo.
GooglePreview installs the same way most other Firefox add-ons do, and you’ll have to restart Firefox for it to take effect.






















There’s an extension much better than this. It’s called BetterSearch and it gives you thumbnail previews of not just Google, but Yahoo!, MSN, del.icio.us and lots more. GooglePreview is waaaay too limited.
tiflet