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Facebook - Facebook has more than two billion daily active users, making it a huge part of many people's lives. Click through to learn about the pros and cons of Facebook and how you can stay safe while using it.

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Positive: keeping in touch - Facebook makes it easy and simple to stay in touch with family and friends.

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Positive: self-expression - Facebook can be an outlet for self-expression through statuses, likes, and shares, among other features.

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Positive: international - Facebook gives people all over the world the opportunity to interact with and learn about other cultures and countries.

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Positive: new friends - Online networking can also help people make new connections and friendships.

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Positive: if you're shy - Some people, especially those who are shy or more introverted, have an easier time making friends online before transferring that to an in-person friendship.

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Positive: promoting a business or brand - Using sites like Facebook is a great way for a business to promote themselves and their brand.

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Positive: tool - Social media sites like Facebook can be used to find missing or kidnapped people as the word can be spread much faster.

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Positive: boredom - Facebook is a great boredom buster when people are stuck in waiting rooms or long lines.

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Negative: gossip - With social media and smartphones, gossip, especially hurtful in nature, can spread fast.

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Negative: cyber bullying - Social media platforms are the perfect place for cyber bullies to harm and shame others without having to physically confront their victim.

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Negative: stalker-friendly - Complete strangers can easily gain access to personal information about others on Facebook without them even knowing.

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Negative: narcissism - According to Psychology Today, studies show that social media is a playground for narcissists and that further studies may be able to show a causal link between social media usage and narcissism.

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Negative: addiction - Facebook can be incredibly addictive, making it hard for people to go very long without checking their news feed.

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Negative: lack of body language - Studies find that more than half of communication is nonverbal. Interacting in a virtual space leaves a lot of room for misinterpretation and other communication difficulties.

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Negative: low self esteem - Studies show that constantly comparing ourselves to others, which is hard not to do on social media platforms, can be harmful for our self esteem.

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Negative: isolation - Constant Facebook usage can lead to people isolating themselves instead of getting out of the house and meeting new people in the real world.

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Negative: losing touch with the present moment - Some people can get so caught up in their phones and their virtual social world that they completely miss out on the present.

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Negative: ruined relationships - Social media has caused the end of many romantic relationships. Some people may get jealous that other people are liking or commenting on their boyfriend/girlfriend's photos, among other things.

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Negative: poor school performance - Many studies have shown that using Facebook and the internet during class can severely impact a student's ability to pay attention and perform well in school.

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Negative: changing faces - Often times, the persona we present on our social media accounts does not tell the complete story of who we are, leading us to become obsessed with what other people think and how we are being perceived.

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Negative: distraction - Constantly checking Facebook makes it hard to stay focused on a task and for some people, results in low productivity and neglect of everyday tasks.

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Negative: new job - Increasingly more employers are going through applicants' social media pages to learn more about them before deciding whether to hire or not.

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Negative: health problems - Spending too much time in front of screens is linked to various health problems such as obesity and diabetes.

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Negative: lack of security/privacy - The amount of information we put online can have consequences for our personal privacy and security. Learn how to stay safe on Facebook in the following few slides.

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How to stay safe - Familiarize yourself with Facebook's security settings, from posts to photos and searches. Don't friend or accept friend requests from people you don't know. Criminals often use fake profiles.

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How to stay safe - Don't overshare personal information on your "about me" page or in your posts and photos.

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How to stay safe -

Protect your location by not using the location or check-in features.

See also: How Facebook spies on you (and what to do about it).

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