Nowadays, many people can connect with other people by using social media such as facebook, twitter, path, etc. So, online etiquettes are definitely needed to prevent any misunderstanding, disputes, harassment and crime. Firstly, you do not have to add friends on your social media if you don't know them well or speak to them only occasionally. We must keep in mind that a stranger might harm you. Secondly, you do not have to post photos of other people drunk, drinking or doing other nonsense. Your entire life doesn't need to be uploaded to a public website that other people can see. But, you can still take and keep your pictures privately. Thirdly, you have to be careful when you want to post something on your friend's walls. You do not need to write inappropriate things. It may look funny for you, but it can just look bad to others. You know that social media is a good place for discussions. You can share the good things, but the bad things should be done elsewhere. This can make everyone use online etiquette.4.What is the text about?
5.But, you can still take and keep your pictures privately." (Paragraph 2) What does the underlined word mean?​