The workflow patterns initiative started at the Fourth IFCIS International Conference on Cooperative Information Systems (CoopIS) in Edinburgh in 1999 when Wil van der Aalst and Arthur ter Hofstede started working on workflow patterns. This site triggered both researchers and practitioners to apply workflow patterns in product development and product evaluations. Moreover, several reports on the patterns appeared in Dutch IT journals around the end of 2001 and beginning of 2002. As a result, many Dutch organizations started to use the workflow patterns in selection processes. This triggered the interest of workflow vendors. The success of the site becomes clear when looking at the number of visitors. Over the last two years, the site was visited more than 35000 times and today about 100 people visit the workflow patterns site on a typical working day.