I took another brief look at Pixsy today. While I like the search response, and the content sources searched by Pixsy, I'm still not happy with the duplicate videos returned by the system (duplicates of the same video hosted on different systems, or the same videos posted multiple times on a host like YouTube). Test this out by doing a search for a popular company (one that advertises a fair amount) like American Express or Mastercard ... you'll find duplicate videos.
It would be useful for Pixsy to include a checkbox (and yes, I know this would not be a trivial undertaking) allowing the searcher to "opt-out" of the duplicate videos (perhaps also allowing you to set a preferred list of providers). There is much to like about Pixsy, and I'll continue to use them as a source for my video search needs.
More about Pixsy at: http://www.pixsy.com/default.aspx.