There is no valid way to compare SEO and Social Media. Both are different marketing tools and in a few ways complement each other.
Below are some points on both.

SEO
Social Media

SEO is focused on getting potential customers to visit your website through search engines and in the process from other sites.
Social Media marketing is more focused [...]

It is a New Year and you have made new resolutions for yourself. How about some for your website?
Yes! Your website needs resolutions too. Websites and the devices accessing them are evolving rapidly. Your website needs to keep up. These 12 New Year website resolutions will help you do just that.
Resolution 1. Update your Website [...]

Facebook has recently announced the launch of an improved Groups product. The new changes would make Facebook groups a much more integral part of the Facebook experience. Along with a new look interface users also get a variety of features to choose from. The reason behind this new initiative is to enable users to communicate [...]

Email is still by far the major means of communication despite the rise in Social Media. The irony is obvious when you have to authenticate your Facebook, Linkedin or Twitter account using an email id.

Experts vouch for the sales figures provided by effective email marketing campaigns. Newsletters are an effective way to keep in touch with your customers.

The term viral marketing initially rings a bell with about viral – fever and the related disease but then what is viral marketing and what exactly does it deal with? In the internet world viral marketing refers to creating a buzz, the word of mouth publicity, making people talk and discussion about the product/company/services.