The expanded snippets was sorely needed. The improved algorithm was probably needed considering how many people who use Google, have no idea how to use it properly. Even with this update I’m sure I will still be using boolean searches.
Today we’re rolling out two new improvements to Google search. The first offers an expanded list of useful related searches and the second is the addition of longer search result descriptions — both of which help guide users more effectively to the information they need.
More and better search refinements
Starting today, we’re deploying a new technology that can better understand associations and concepts related to your search, and one of its first applications lets us offer you even more useful related searches (the terms found at the bottom, and sometimes at the top, of the search results page).
For example, if you search for [principles of physics], our algorithms understand that “angular momentum,” “special relativity,” “big bang” and “quantum mechanic” are related terms that could help you find what you need.
Longer snippets
When you enter a longer query, with more than three words, regular-length snippets may not give you enough information and context. In these situations, we now increase the number of lines in the snippet to provide more information and show more of the words you typed in the context of the page.