View to display nodes with a random term I have got a view that selects some images. Each image is tagged with a taxonomy term. I would like the view to display only images tagged with a common term that is chosen randomly at every use.

The view is used as a block.

Example:
term: a, images: img1, img2, img3;
term: b, images: img4;
term: c, images: img5, img6;

One user sees a sequence of img1, img2 and img3. Another one sees img4 only. A next one sees img4 too.

How should I do it?
I would set up an argument (D6) / contextual filter (D7) to filter the view results based upon a taxonomy term, and then for the argument/filter value, select the PHP option for providing the default, and in there randomly return one of your taxonomy terms.  Without actually testing the code, I would imagine using array_rand() would make this rather trivial, eg:

$terms=array('foo','bar','baz');
return $terms[array_rand($terms)];