Tags are another way to search for records in Salesforce. Tags can be added to nearly any object. Personal tags are limited to 500. Public tags are shared by everyone, with limit of 5000.The same tags are reused on all objects. Tags work on Group, Professional, Enterprise, and Unlimited Editions. Combining tags narrows down the search. Tags can Not be used in reports.
Use tags to find:
My Top prospects
My Top leads contacts
My Top contacts
Top customers
My Top sales
Best customers
All stars