Search engine optimization (SEO) is the process of improving the volume and quality of traffic to a web site from search engines. It considers how the search algorithms work and what people search for. SEO efforts may involve a site’s coding, presentation, and structure, as well as fixing problems that could prevent search engine indexing programs from fully spidering a site.
As a marketing strategy, Search engine optimization enhanced web site come on the top of search engine result i.e. more traffic comes to your web site. Therefore marketing through SEO also called Search Engine Marketing (SEM).

Where Social Media Optimization (SMO) is the process or method in order to getting publicity via Social Media, Internet and Online Communities. It is a form of Search Engine Marketing (SEM). In many ways, SMO is connected as a technique of marketing where rumor is created not through friends or family but through the use of networking or websites.

The concept behind SMO is to implement the changes to optimize a site so that it is more easily linked to more highly visible in social media searches on search engines. SMO can drive huge amounts of people to a website. It involves driving traffic to a website through new channels because search engines aren’t the only sites that drive big traffic anymore.

Social Media can be considered anything that can help build a community to gathering around. A lot of websites can now be used as places to put out your marketing message. Spreading messages through blog posts. It is all about making something easy to spread.
With SEO, the goals are clearly defined, means you are trying to make a website visible in the search engines. Where the concept behind SMO is simple and implements the changes to optimize a site so that it is more easily linked to more highly visible in social media searches on custom search engines, and more frequently included in relevant posts on blogs. It
Increase Your Link ability;
Make Tagging and Book marking easy;
Reward Inbound Links;
Help Your Content Travel;
Encourage the Mash up;

Marketing through Social Media Optimization is called Social Media Marketing (SMM) i.e. marketing through social media and social networking sites.

SMO refers to the process of refining a website (optimizing it) so that it’s awareness and content are easily spread through social mediums and online communities by users and visitors of the website. This can include anything done “on-page” such as improving the design and usability of the website so that it becomes more compelling to users, in an effort to help them spread it through social media sites.

SMM on the other hand plays more of an active role in relation to social media by referring to the creation and distribution of content and other messages through the social web.
Here, I would really like to know what the other people think about this idea that “Can It be the alternate to Search Engine Optimization?” What you think?