health and social.
web 2.0 is good for your health and social life for its a form of socialization you can meet not only new people but  you can also keep in touch with you friends and family. this is good cause it keeps you in a positive state of mind and helps you no whats going on back home with out spending as much money than a phone call.
it is also grate cause it can give you info/ knowledge this helps fund you curiosity this helps us learn. it can also inform us about world crises such as war, resection and so on