This paper presents a technique, the Quantum Web Field, designed to give an ambient visualisation of the current activity on a web site. It uses the paths of past visitors to the site and a self-organising map to build a diffuse 'probabilistic' mapping of pages to cells in a 2D matrix, where highly traversed page-links tend to be closer to each other. The paths of current visitors appear as intelligible trails giving a sense of purposeful human activity rather than offering detailed analysis. The visualisation is not constrained by either the complexity or the number of pages in the site.