When a method in the class returns a reference to a field object, it should return a reference to a copy of the field object to prevent security holes.

Stop normalising the american *smart answer*

Social networking sites d. online forumsthe first recognizable social media site,  six  degrees, was created in 1997. it enabled users to upload a profile and make friends with other users. in 1999, the first blogging sites became popular, creating a social media sensation that's still popular today.