Dan, is this book going to provide a substantial, coherent and timely contribution to CSCW or is it just going to be a ragbag of papers from several meetings stuck together? The latter, of course, Colston. However, . . . . . . and the "However" was rather long and technical, but not substantially different in overall content from that of this pref- ace. Most of the papers contained in this book were initially presented at meetings organized by the UK's Computer Supported Cooperative Work (CSCW) Special Interest Group in 1991, but the book is not a proceedings, whatever the above quo- tation...