SIGGRAPH 99's ARTsite stimulates new forms of artistic expression that wrap around and extend beyond the Web. Some of the 13 works use features unique to the Web to create a sense of community, connectivity, artifacts, and interactivity. Others were selected because they include powerful imagery, concepts, sound, structure, and clever writing, and because they are strong examples of electronic art delivered on the Web.   Computational Expressionism Joanna Maria Berzowska Massachusetts Institute of Technology 20 Ames Street, E15-443 Cambridge, Massachusetts 02139 USA joey@media.mit.edu   S U T U R E Adam Chapman ADM's Design Machine 1808 Grace Street Winston-Salem, North Carolina 27103 USA adm@queeg.com   My MeMart Madge Gleeson Western Washington University Bellingham, Washington 98225 USA mgleeson@cc.wwu.edu   The Existence of All Things, Past, Present, and Future Peter Liebenow Little City Foundation's Multi-Disciplinary Art Center 1760 West Algonquin Road Palatine, Illinois 60067 USA artist@artistical.org   PLAY-Lets Conor McGarrigle 1 Annamount Mulgrave Street Dun Laoghaire Company Dublin, Ireland cmg@clubi.ie   Travels Towards Robin Petterd 19 Cato Avenue Hobart 7000 Australia robinp@peg.apc.org The Charmed Horizon Kim Stringfellow 651 North Hoyne Avenue Chicago, Illinois 60612 USA mail@kimstringfellow.com   Tree Fix Michele Turre University of Massachusetts Amherst 755 Shelburne Falls Road P.O. Box 338 Conway, Massachusetts 01341 USA mturre@art.umass.edu   Nagasaki Marilyn Waligore 6477 Fisher Road Dallas, Texas 75214 USA sorcery@flash.net   Prima Materia Timothy Weaver Spatial Technology 2425 55th Street Boulder, Colorado 80301 USA tim_weaver@spatial.com   Sampling Broadway Annette Weintraub City College of New York c/o 2 Bond Street New York, New York 10012 USA anwcc@cunyvm.cuny.edu   Ghost City Jody Zellen 843 Bay St. #11 Santa Monica, California 90405 USA jodyzel@aol.com   The City Peter Liebenow Little City Foundation's Multi-Disciplinary Art Center 1760 West Algonquin Road Palatine, Illinois 60067 USA artist@artistical.org