Content sources are data stores of information that SharePoint Portal Server indexes for searches and browsing. By using these various content sources, organizations can index information in place, meaning they no longer need to copy final documents to a centralized server for indexing. With in-place indexing, users store and create content where they use it. Click here . C ategories represent generic bins of information that enable portal administrators to create logical views of information.
Portal administrators can create category hierarchies with specific user types in mind.
For example, a company might create a category hierarchy that gives salespeople quick access to information within specific industries. At the same time, it could create another category browsing hierarchy that gives developers access to a technological view of information and solutions. You can also classify documents with multiple categories, eliminating duplicate file copies within the store. Issue Subscriptions SharePoint Portal Server's subscription component notifies users when pertinent information within the portal changes. Once you've subscribed, you're notified anytime a new document is added or modified in the Proposals category.