I wondered if people had a list of the top five or ten links you should build for a new website in order to add some sense of authority.

For example should a new website start with key social media websites such as Twitter, Google+ and Linkedin ?

Or top level directories such as BOTW and DMOZ?

Should they local for niche website directories in their location or vertical?

If you had to choose five links - free or paid which would they be?