Google has returned to its core business, and announced three new products that it hopes will help visitors to its site to find answers to their searches quicker.

Google Co-op, Google Desktop 4, and Google Notebook will all aim to help users find more relevant search relevant information.

In addition to the search engine optimisation applications, Google has also launched a new tool called Google Trends that allows users to examine billions of searches conducted on Google since 2004 to gain insight into broad search patterns over time.

Google Co-op beta is a community where users can contribute their knowledge and expertise to improve Google search for everyone. Organizations, businesses, or individuals can label web pages relevant to their areas of expertise or create specialized links to which users can subscribe.

Once a user has subscribed to a provider's content, all of that provider's labels and subscribed links are added to the user's search results for relevant queries. These contributions serve as meta information that helps Google's search algorithms connect users to the most relevant information for their specific query. Users interested in contributing can get started at

google.com/coop

.

For example, a doctor can label web pages related to arthritis, and users who subscribe to that doctor's information will receive options at the top of the results for more specific information such as "treatment," "symptoms," or "for health professionals" when they enter a relevant query.

As we reported last week, Google has worked with partners to annotate web pages related to health and city guides and to offer dozens of subscribed links to specialized content such as restaurant and movie information.

Users can subscribe to content and providers at

google.com/coop/directory

. Google Co-op is available today on all English language Google domains including Australia, Canada, New Zealand, and the United Kingdom.

Also announced today, Google Desktop 4 beta – available in English, French, Italian, German, Spanish, Dutch, and Brazilian Portuguese – offers another way for users to improve their search experience, by personalizing their desktops with the introduction of Google Gadgets. These gadgets are mini-applications that reside on users' desktops and deliver a variety of personalized information such as games, media players, weather and news. Google Desktop can also recommend new gadgets and can automatically create a personalized homepage for users based on the subjects they frequently search and access.

Google currently has hundreds of gadgets users can add to their desktops and with the new Google Desktop Gadgets API, developers can easily create and share their own gadgets with other users.

Google Desktop 4 also enables users to access their Google Gadget content and settings from other computers and protect it from computer crashes by saving it online and add favourite gadgets from their personalized Google homepage right onto their desktops. Access other Google services from their desktop.

Google Desktop 4 will be available in additional languages and include more localized features for users around the world as the product evolves. Additional information on the newest version of Google Desktop is available at

desktop.google.com

.

Google Notebook allows users to clip text, images, and links from the pages they're browsing, save them to an online "notebook" that is accessible from any computer, and share them with others.

Google Notebook will be available next week from Google Labs at

google.com/notebook

.

Finally the company has launched Google Trends (

google.com/trends

) that builds on the Google Zeitgeist to help users find facts and trends related to Google usage around the world.

Google Trends enables users to learn how popular a particular search term has been on Google over time and see the relevant news articles that ran on that subject.