At a high level using netiquette, applying online ethics, or being a good netizen means:

 
 
• Recognizing that the internet is not some new world in which anything goes, but rather a new dimension or extension of our existing society.
 
• Applying the same standards and values online as we are accustomed to applying in the rest of our lives. In simple terms this means that the values society has in place against such things as hate speech and bigotry, copyright violations and other forms of theft, child exploitation and child pornography, remain intact. As do the values around courtesy, kindness, openness, and treating others with the same respect we wish to receive.
 
• Accepting that the laws which are currently in place to protect the rights and dignity of citizens apply online, and that where needed, laws are updated to reflect these rights in the extended environment. Theft online is still theft, stalking, bullying, harassing, tormenting online is still abusive, and so on.
 
• Acknowledging that cultural differences remain, even when national boundaries no longer apply. This requires finding a way to accept that the social values and norms of some netizens will not be the social values and norms of all netizens.
 
• For companies, being a good netizen, applying online ethics, or using netiquette also includes
   
  1. Respecting the rights to privacy assumed and possessed by citizens in their offline interactions.
   
  2. Maintaining transparency in their policies and actions so that consumers can easily and quickly understand how that company is using their information, protecting them from harm, and giving users a clear means of ownership and self-determination as to what is, and isn’t shared about them.

A weblog is a hierarchy of text, images, media objects and data, arranged chronologically, that can be viewed in an HTML browser.’ Source

‘A frequent, chronological publication of personal thoughts and Web links.’ Source

‘From “Web log.” A blog is basically a journal that is available on the web. The activity of updating a blog is “blogging” and someone who keeps a blog is a “blogger.”‘ Source

‘A weblog is kind of a continual tour, with a human guide who you get to know. There are many guides to choose from, each develops an audience, and there’s also comraderie and politics between the people who run weblogs, they point to each other, in all kinds of structures, graphs, loops, etc.’ Source

‘A blog is basically a journal that is available on the web. The activity of updating a blog is “blogging” and someone who keeps a blog is a “blogger.” Blogs are typically updated daily using software that allows people with little or no technical background to update and maintain the blog. Postings on a blog are almost always arranged in cronological order with the most recent additions featured most prominantly.’ Source

‘A blog is a website in which items are posted on a regular basis and displayed in reverse chronological order. The term blog is a shortened form of weblog or web log. Authoring a blog, maintaining a blog or adding an article to an existing blog is called “blogging”. Individual articles on a blog are called “blog posts,” “posts” or “entries”. A person who posts these entries is called a “blogger”. A blog comprises text, hypertext, images, and links (to other web pages and to video, audio and other files). Blogs use a conversational style of documentation. Often blogs focus on a particular “area of interest”, such as Washington, D.C.’s political goings-on. Some blogs discuss personal experiences.’ Source.

Your digital identity is made up of four categories of information / data:

 
 
• Authentication elements: email address, user name, password, last name, first name, alias, IP address, etc.
 
• Data: personal, administrative, occupational, banking, social data, etc.
 
• Identifiers: photograph, logo, image, avatar, etc.
 
• Digital traces: contributions to public content management systems such as Twitter, YouTube, Wikipedia, etc.

Digital identity is made up of elements that fall into four categories (source: Lionel Maurel / Fadhila Brahimi):

 
 
• Authentication elements: identification number, IP address, email address, user name, password, last name, first name, alias, etc.
 
• Data: personal, administrative, banking, occupational, social data, etc.
 
• Identifiers: photograph, avatar, logo, image, etc.
 
• Digital traces: contributions to blogs and other content management systems, links, etc