If the words Search Engine Optimisation don’t mean anything to you, look away now.

Google appears to have disabled the display of PageRank on browser toolbars and online ranking checkers. Toolbar plugins, such as SEOQuake and SEOBook, which had been displaying the Google PageRank for the site being viewed are now showing as either N/A or 0.

On Twitter, the majority of people in the industry rejoiced the seeming end of Google’s Toolbar PageRank display. Since its first appearance several years ago it  has been used, arguably more than it should have been, as a way of determining the quality of a website.