Google's Experimental Search Box for Financial Sites

Google experiments with displaying a search box next to sites like Google Finance, Yahoo Finance, Reuters. There's a button with the following label: "get quotes" and you're supposed to use this feature if you want to search for share prices.

For example, when you type [Google] or [GOOG], you're sent to the right page from Google Finance, Yahoo Finance and other financial sites. If you search for [computers], you'll get a search results page from the financial site. Is this the first time when Google shows a search box and doesn't return its own results?

I checked the source page and it says that it's a rich snippet, just like those that are used for reviews, music, events, products.

{ via Rubén }