In an attempt to turn the tides of declining market shares Yahoo! today implemented real-time search, just like Google did with Instant a couple of months ago. No need to type in a complete question, Yahoo! will try to guess what you want to ask them, based on previous searches. A much requested feature, and extremely valuable for all of those time-poor people out there. Because as of today it only takes you about 1 second to find out what Yahoo! users think about their search engine and their services*.
* For your entertainment only – of course a search for Google will provide you with a virtually similar list. Virtually similar, because on that list the question ‘why is Google better than Yahoo!’ appears ;)