Here's a Pixsy announcement that doesn't involve powering search for another site. Not directly, at least. Pixsy has actually worked with Pageflakes to offer a specialized photo search widget. It's actually a celebrity search "flake" that users can add to their Pageflakes personalized start page to immediately access an image and video search tool that features your favorite superstars.
It should be easy enough for you to find on Pageflakes--it's currently featured as one of the new widgets for you to add to your start page. All those other announcements of Pixsy teaming up with another site to power its image and video search, or adding another site's inventory to its database for a wider distributed search have amassed to this. Pixsy on Pageflakes.