Yahoo Search has expanded its running of limited live tests of its new Yahoo Search Assist driven search result pages which sport a new layout and drop down menu for refining search queries to best match user intent.

The new Yahoo UI places the search box on the top left hand side of the screen, with the Yahoo logo to the far right.

An optional Yahoo Search Assist dropdown menu is served where users can better refine their search queries from one or two word searches into the types of queries which wil serve the results users are looking for.

Old Yahoo :

New Yahoo :

Try searching on Yahoo Search for different and Yahoo may serve the new search results UI which is currently being tested.

More on the new Yahoo:

* Danny Sullivan had a nice review of Yahoo Search Assist when it was under private testing.
* ReadWriteWeb also reviewed Search Assist a bit under testing.