CrunchBase is a database of investors, Venture Capital firms, and startups that includes bios and investment histories.
It is mainly an information hub and is not necessarily focused on pairing startups with investors.
It is managed by the owners of the blog TechCrunch.
Worldz has developed an algorithm that lets you know how valuable the individual posts are, that you publish on Facebook while online shopping. Saving on purchases or gaining a percentage discount.
Everyone can be be a mini-influencer and advisor in his own community and on the social networks!