Social media plays very important role regarding search engine optimization and website promotion. It is common to share any type of information using different types of social Medias. Which type of social media has to use, it depends on the information which you are going to share. In this article I am going to describe the different types of available social media.

Wikis:

These are collaborative web sites. The concept behind wikis is that anyone who has access to the site is able to add to or change any page on the site. For example Wikipedia etc. Wikipedia pages have good rank and position in search engine. So it is a good tool for website promotion.

Social networks:

A group of people tied together by some common interest. Interests can range from reading to education to food to news or any other subject imaginable. For example

MySpace, FaceBook and Villij etc. In my experience FaceBook and MySpace are power tools for website promotion which has potential to transfer traffic to your website or blog.

Presence Applications:

Presence applications are like miniature blogs. These sites allow users to communicate back and forth using their services. Conversations run from important to completely mundane on these web sites. For example Twitter, Jaiku, Pownce etc.

Video Sharing:

Have a great vacation video you want to share? YouTube takes “America’s Funniest Home Videos” to a whole new level. If you have a digital video camera and some time, you can create and share any kind of video that you would like. For example YouTube etc.

Virtual Reality:

This interesting social networking category is like living in a fantasy world. You make up your looks, personality, your life, and all of your surroundings. But don’t think this is just a game. Living a virtual life can be more than just fun; it can also be a way to make a good income for some people. For example “Second Life” etc.

Events:

Events networks connect people according to the events that they are attending or want to attend. If you want to know who’s going to be at that Mike concert on Thursday night, check out on of the social-events networks. For example Upcoming etc.

News aggregation:

These social networks are connected by current and past news. If you find a news story that you think is good enough to be shared with people whose interests are the same as yours, you can add it to your network for them

to view. For example Digg, Reddit etc.

Photo Sharing:

Everyone wants to share pictures. Photo-sharing networks let you share your pictures with anyone that you want to. Most of these services also allow online photo storage. For example Flicker, PhotoBucket and Zooomr etc.

Live Casting:

Live casting is literally live web casting. A community is built around the web casts, including everything from blogs to chat rooms. For example Justin.tv etc.

Episodic Online Videos:

These social networking sites are built around online videos, but the difference here is that each person tells a specific story in a series of episodes. The social network is built around your favorite episodes. For example Your Truman Show etc.

Medial Sharing:

If you want to create a network of people with whom you can share all kinds of media files, these services are the ones to use. Connect to as many or as few friends as you like when sending e-mails, videos, audio files, and more. For example lzimi and twango etc.

Music Sharing:

Not music file sharing, but creating community around music. Most of these sites allow for integration with iTunes or other media players to keep track of the music you listen to, and make recommendations based on your tastes and the tastes of your network. For example last.fm and pocketfuzz etc.

Social Bookmarking:

Social bookmarking is one of the most widely used social-media techniques. These services allow you to tag news stories, blogs, videos, audio files, web sites, and other Internet-based services to share with friends. Tagged sites are then ranked (and searchable) according to the number of tags received. For example del.icio.us, ma.gnolia.com and blinklist etc. Del.icio.us is the popular social bookmarking service and commonly used for sharing the web links with little detail. It is commonly used service regarding website promotion.

Social network Aggregators:

Social networks have gotten so pervasive that much like Meta search engines, social network aggregators have begun to arise. The concept is to log in to one place and see all your updates from various social networks, photo sharing, and presence applications. For example socialthing!, socialstream and profilactic etc.

The types which are described above would be helpful for you to market and promote your website. But this is not the end there are so many social Medias available for free. But before using a social media be sure that it has good rank and good traffic. So that it could transfer traffic to your website or blog.