What are the best video search engines?

To what extent are people now using social networks, microblogs, online video channels etc as their main starting points on the web, rather than the top search engines? On the lookout for hard data ...

• Answer:

  This may not be precise enough data, but here are a couple items: 3 of the top 12 sites (according to Alexa) are social networks In terms of ecommerce sales driven, social isn't too far behind search (see below and http://gigaom.com/2012/08/10/social-lags-search-and-email-in-driving-ecommerce-conversions-revenue/ Social still lags behind search in most areas as the "go to" option to find what you want: http://searchenginewatch.com/article/2185260/Search-vs.-Social-The-50-Shades-of-Gray-in-Online-Information-Retrieval