An increased amount of people are noticing that Yahoo has added search suggestions after users type more than two letters in the search field on Yahoo.com. This was first reported by Search Engine Land but was discovered recently by DigitalPoint Forums members.
The feature, according to many, is called "Search Suggestions." In fact, according to Barry's report on Search Engine Land, you can disable it if you don't like it, which some DigitalPoint Forums members have done.
Forum discussion continues at DigitalPoint Forums.