What social networking sites have more "appearance" and visits? Marketing purposes?

[Eric]

What share buttons to incorporate on the blog? reddit, digg, tumblr, tweet ? Any other? Why?

[David]

I prefer Facebook, Twitter and Digg. These are the great resource for allows you to create a platform around yourself and/or your brand and build a thriving community.

[Juno Mclaughlin]

Social networks make viral marketing and word-of-mouth marketing much easier than before. The best use out of social networks is not to make money ‘directly’ off them, but to harness their marketing potential and to use them to market your own business.

Online social networks present an efficient platform for you to use in the spread of your marketing message. In addition, it is also a great tool for getting tons of visitors and thousands of page views to your site.

Standard search marketing and website design tactics will tell you that the best way to do this is by creating lots of content targeted at your niche keywords. Then, you’d do doing everything in your power to get links back to your website pages with your niche keywords as text anchor links.

Instead, what it does mean is that you need to devote more of your attention towards how you can leverage the traffic you do receive from these sources. To do that, you should allow your visitors to create their own social network centered around your niche topic.

[Kushal K]

Twitter is a must because twitter is growing at a faster rate compared to facebook each year and in just 2 or 3 years it will beat every single competition and you have to take advantage of it for better site performance.

Digg is also good.

Google just recommends google plus and they also like twitter, facebook and digg.