Information Sites in Multimedia

Maybe I am just ignorant of this, but I feel that Multimedia research community does not have resource sites where one could go to find information, data, algorithms, research places, products and such.

If I need to run some experiments in clustering photos of the same event captured by multiple people (say Tom’s Wedding — where 25 cameras were used) — or just a collection of photos with EXIF data and some classification.
Or if I want to use somebody’s published algorithm — yes opencv is a step in a righ direction but is limited and is not that well maintained. I don’t even have an easy way to find all the places that are doing research in multimedia ontologies and such.

Why is it that such sites don’t exist? W have so many professional organizations. Should one of those take lead and build such a site?

Or is it that I feel the need for such a site, but there is no need for this.