A blog (a contraction of the term " Web log ") is a Website, usually maintained by an individual with regular entries of commentary, descriptions of events, or other material such as graphics or video.
Entries are commonly displayed in reverse-chronological order.
"Blog" can also be used as a verb, meaning to maintain or add content to a blog .
Most blogs are primarily textual, although some focus on art (artlog), photographs (photo blog), sketches (sketch blog), videos (vlog), music (MP3 blog), audio (podcasting)
A site containing a portfolio of sketches is called a sketch blog or one comprising photos is called a photoblog.
Blogs with shorter posts and mixed media types are called tumblelogs.
A rare type of blog hosted on the Gopher Protocol is known as a Phlog
Some blogs focus on a particular subject, such as political blogs, travel blogs, fashion blogs, project blogs, education blogs, niche blogs, music blogs, quizzing blogs and legal blogs (often referred to as a blawgs).
While not a legitimate type of blog, one used for the sole purpose of spamming is known as a Splog.
The websites without a main focus are often referred to as "traditional" social networking websites and usually have open memberships. This means that anyone can become a member, no matter what their hobbies, beliefs, or views are. However, once you are inside this online community, you can begin to create your own network of friends and eliminate members that do not share common interests or goals.
Common sites include MySpace, FriendWise, FriendFinder, Yahoo! 360, Facebook, Orkut, and Classmates
We bookmark sites on our browsers by going to the “add to favourites” or “bookmark” for our personal use – but what if we want to share these sites with others?
It is a method for Internet users to store, organize, search, and manage bookmarks of web pages on the Internet with the help of metadata.
Here, users save links to web pages that they want to remember and/or share. These bookmarks are usually public, and can be saved privately, shared only with specified people or groups, shared only inside certain networks, or another combination of public and private domains.
Most social bookmark services encourage users to organize their bookmarks with informal tags instead of the traditional browser-based system of folders.
They also enable viewing bookmarks associated with a chosen tag, and include information about the number of users who have bookmarked them. Some social bookmarking services also draw inferences from the relationship of tags to create clusters of tags or bookmarks.
Some common and well known social bookmarking sites are Reddit, Digg, Del.icio.us, StumbleUpon, Technorati to name a few..
RSS is a Web feed format used to publish frequently updated works – such as blog entries, news headlines, audio, and video – in a standardized format.
An RSS document is called a "feed", "web feed", or "channel“ and includes full or summarized text and benefit readers who want to subscribe to timely updates from favored websites or to aggregate feeds from many sites into one place.
RSS feeds can be read using software called an "RSS reader", "feed reader", or "aggregator", which can be web-based or desktop-based.
The user subscribes to a feed by entering the feed's URL into the reader or by clicking an RSS icon in a browser that initiates the subscription process.
The RSS reader checks the user's subscribed feeds regularly for new work, downloads any updates that it finds, and provides a user interface to monitor and read the feeds.