Three ideas are currently listed on that page: Alternate views for search results, Keyword suggestions and Keyboard shortcuts.

Alternate views for search results provide timelines, maps and in-context information. A search for Civil Rights Movement would for instance display a timeline above the search results that is showing the amount of information available for that period in time. A click on a period displays only search results about that time period.

Those alternative view modes work best when searching for people, events, companies and the like and can provide specific search results easily.

Keyword Suggestions, the second entry at Google Experimental is known by Firefox users. The search box in Firefox is showing suggestions when typing in search queries in Google Search. It’s known as Google Suggest.

The third entry Keyboard Shortcuts introduces keyboard navigation in search results. The following keys are set:

• J Selects the next result.
• K Selects the previous result.
• O Opens the selected result.
• Opens the selected result.
• / Puts the cursor in the search box.
• Removes the cursor from the search box.

Most of these commands are also known from other Google products like Google Reader where they have similar functions.

Google Experimental is offering a view of what is probably to come in the future. It’s worth visiting that website every now and then to check on updates and additions.