Etiquette helps individuals behave in a socially responsible way. In simpler words, etiquette transforms a man into a gentle man.Internet Etiquette refers to a set of rules an individual needs to follow while communicating through mails, writing blogs, sharing views on online portals or any other online forum. As we are using this blogs, social networking and emails we must need to know what are the rules and be informed for the Do's and Don't. Let me share to you some of the Do's and Don't i made based on my experience of using blogs, social networking and emails. 
BLOG
Do's                                        
1.  Be relatable and be yourself. You need to have a content on your blog that will draw your personality so that readers will get to know you.
2. Include Images. While people know your information and personality they may need also to stimulate you visually so you need to have images in your blog.
3. Respond to blog comments.Its an opportunity to connect directly with the people who are reading your work. Not all comments need a response but it is nice to have a response just like saying  "Thank You for reading my blog".
Don't
1. Be negative. It is not right to post on air your personal grievances publicly.
2. Make Grammar and Mistakes. If you do commit mistakes correct it as soon as you can.
3. Longer Paragraphs. Long post may hard for readers to understand your post so you can make it to shorter paragraphs by using bullets or lists. 
SOCIAL NETWORKING
Do's
1. Post statuses every once in a while. Let everyone know what you're doing or what's on your mind without giving them too much information.
2.Post a few pictures from events on your profiles. It is nice to share your daily activities. 
3.Use the private messages feature provided by social networks to send out personal information. Most especially your personal information just like your mobile number.
Don't
1. Dont make a post every minute. Some people may get annoyed with you and delete you.
2. Dont publicly post your personal information. It is not right and proper to post your personal information in social networking.
3. Dont connect with everyone or accepting request for those people you don't know yet maybe they are hackers.
EMAIL
Do's
1. Email is a helpful tool for applying a job. As we observed now companies hiring for a job are now requiring sending some of your documents via email just like sending your resume.
2. One message, one topic. In an email you can totally make it as a one when you have to send something or we can say make an email in a whole of what is your topic.
3.Receive response quickly. If you email something that is so important and you need a response right a way you can receive email from your sender quickly.
Don't
1. Don't make any assumptions about the sender's emotional state.Unless the sender actually spells out the fact that he or she is angry 
with you, don't assume that the person intended to send a rude response you just don't know for sure.
2. Ask for clarifications. If you receive an email that doesn't quite make sense with confusing grammar or no punctuation ask quickly the sender for a clarification.
3.Remember the permanent nature of e-mails. Using e-mail to praise 
helps people remember the kind words. Using e-mail to be critical is 
usually a bad idea because people will re-read the note many times.