How could we live without our smartphones, laptops, and other devices that allow us to go online?
You've probably heard stories about people who got into trouble for something they did online — whether it was sending an inappropriate photograph by text message, joining in on some online bullying on a website or message app, or getting ripped off by someone they met through a website.
Because users can easily remain anonymous, some of the more popular websites and messaging apps might attract adults who pretend to be teens or kids.
If you ever get involved in any messaging or online chats that make you feel uncomfortable or in danger for any reason, exit and tell a parent or other adult right away so they can report the incident.
You also can report it to the website of the National Center for Missing and Exploited Children — they have a form for reporting this type of incident called Cyber Tipline.
But besides the millions of sites to visit and things to do, going online offers lots of ways to waste time — and even get into trouble.
And just as in the non-cyber world, some people you encounter online might try to take advantage of you, steal your personal information, or harass or threaten you (called cyberbullying).
They will then see that the info is forwarded to law enforcement officials for investigation.
It's not just strangers who can make you feel uncomfortable.
Some people who hang out with their friends online set up private chat rooms where only they and the people they invite can enter to chat.
Safety experts recommend that people keep online friendships in the virtual world.
But spam blockers can keep your mailbox from getting clogged.