Facebook
The advantages of using Facebook are you can keep in touch with friends and family which is useful if they live abroad, you can share photos with friends and you have posts on your page which can include birthday messages, you can also research businesses and other places like museums and art gallery's. Disadvantages of using Facebook are you can fall victim to internet trolls who constantly bombard you with abuse, your account can be hacked which means people can gain access to private information you may have on your account, people can find out where you are meaning that you could end up getting stalked by a complete stranger.
Twitter
The advantages of using Twitter are when a person follows your page they will automatically receive any updates you make, you can find out about what different celebs are up to by following them and you will receive updates which can tell you about what they have been doing recently and you can get updates about sporting events such as any live games that are being played or any cricket games that are in progress. Disadvantages of using Twitter are that Twitter isn't a professional communication channel it is more for just following your friends or celebs.
E-mails
The advantages of using e-mails are that you can email files such as word documents and images to allow you to access them anywhere, you can send things to a set person or group of people instead of sending it to everyone. Disadvantages of using e-mails are you can receive spam and phishing e-mails which can be annoying and will probably end up costing you money, viruses can be sent in e-mails which will then end up infecting your computer and could cause loss of work.