A lot has been said and written about how to do SEO and content strategy for B2B startups and e-commerce. However, what are the key things to cover when building a social network such as Facebook or LinkedIn etc?<p>The primary thing we want to rank for are the Google search queries for people's names, i.e. If someone is searching for "Gajus Kuizinas", we are competing with LinkedIn.<p>We have ideas about off-page SEO. However, given that we already have so many unique pages (multiple pages for every user), is there anything that is a must to do?, e.g. Does a sitemap make sense for a social network that already has hundreds of thousands of users?