Here's a screencast of a Lily demo app that runs in the background while you surf the web. When you find something you'd like more information about, select the word(s), hit the enter key and page bot does an image search (using the flicker search api) and displays thumbnails of the results. Clicking the thumbnail displays a larger version of the image. Clicking the image again returns you to the thumbnails. Clicking away from the page bot dismisses it.

More information available at lilyapp.org