creating a social network site?

Well it all depends on how people come to your site.

For example, with blog articles people usually arrive through searching for information on specific topics, so each blog article needs to be optimised for search.

Other social networking sites will only have a main landing page, which means that only one page needs to be SEOed.

You need to find a good website designer and seo expert for this task because you're planning to do something big. I'd recommend you to visit codeclerks for the website designer and to make the functions and all that kind of things. I've used this site many times and they deliver excellent results for a good price.

Cheers!

First of all you should focus on viral your website on social media websites, try to update your social media website on time to time and with informative content, then automatically your keywords will ranked and your site can get top position in the SERP (Search Engine Result Page)

Yes you have to do seo of all pages excluding privacy policy.

You can do it. It is better to focus on keyword as keywords are which will increase your ranking...

1.Target your audience ( Key Topic ):

Optimizing your landing page all starts with your keyword targeting towards your webpage. To build an awesome SEO web page you must know what your targeted key word is and stick to it and not get off track. Grab a piece of paper and write it down in big bold print. Have it next to you while you write your page content and look at it frequently to help keep you on track. This sounds strange, but as you write you may tend to wander off the topic you are focusing on. The best tool I have found is Google Keyword Tool.

2.Know Your Competition :

Do some searches about keyword topic or product to see who has a good ranking and why. Make sure you read their page completely and not just focus on their SEO landing page strategy or techniques, just read the content. Find out how and why their webpage ranked high. Once you have done this, it is time to one up them in the ranking.

3.Writing SEO Content : Get step 3-11 at <p><a href="http://hostsb.com">hostsb.com</a%3E%3C/p%3E

First of all, you need to do keyword research. You need to identify keywords for your website. Selecting right keywords matches your content means your site is optimized for those keywords.

yes you can do it dear.

yes you can do it