The ITS gene region has been selected as the official gene for fungal barcoding in a recent publication of the Proceedings of the National Academy of Sciences. Myself and two colleagues from Landcare Research are co-authors of the paper (as members of the Fungal Barcoding Consortium).
I am moving this website content over to a Drupal CMS format, there will be some broken links in the interim. The new CMS will allow me to do site updates much faster and easier. Update 9 April 2012: The entire site has been converted to Drupal, let me know if something is broken.