Social Network is a place where users posts content (textual, video, other) about various topics under predefined categories. There is generally a moderator or an algorithm, which monitors activities and gives prominence to few stories/user generated content. Moderator also starts discussion or edits the thread on any topic.

A) Content is clearly divided into Communities, Categories or Tags

B) Tagging is very essential. Location & Keyword tagging are 2 main important tags

C) All pages to have static urls as the content posted by users can rank in Organic results.

D) The Title, Category Heading, Breadcrum trail, Number of Views of the content, Content Url and links in the content post are essential for organic ranking.

E) If right content is not getting exposure the moderator has to work to ensure they get maximum views. Bring them on Home Page or link from relevant other pages.

F) The features and tools must be designed to get right content on Top of user attention.

G) To know the value of social media site,

i) Find the top number of views for any content or category.
ii) Find the number of users on each category at any point of time
iii) What is the average posts per user on each category
iv) Find the top 20% of the users posting maximum posts/threads. The same goes to rating content as well.

H) Moderator/Algorithm must choose the Content, Urls to be placed in the home page of the site.