The editorial is available at ScienceDirect: http://www.sciencedirect.com/science? _ob=ArticleURL&_udi=B6V0B-4N206Y4-7&_user=1016757&_coverDate=02%2F13% 2F2007&_alid=564071175&_rdoc=1&_fmt=full&_orig=search&_orig_alid=5640711 75&_cdi=5642&_st=13&_docanchor=&view=c&_subId=412899&_ct=1&_acct=C000050 401&_version=1&_urlVersion=0&_userid=1016757&md5=360baf30716d8c9b4873cef 5a7114cb6 The reference is 'to appear in: Information and Software Technology 2007'