Silver is a longtime contributing editor to San Francisco Site and has written that site"s news page since its inception. In 2003, he co-edited three anthologies with Martin H. Greenberg, Wondrous Beginnings, Magical Beginnings, and Horrible Beginnings, which reprinted the first published stories of authors in the science fiction, fantasy, and horror genres. From 2004 through 2012 he was the publisher and editor of ISFiC Press.
Silver had earlier written a column on alternate history for the magazine.
In 2009 and 2010, he edited the two volume Selected Stories of Lester del Rey for NESFA Press. The first volume is entitled War and Space and appeared in August, 2009.
The second volume, Robots and Magic was published in February 2010. Sidewise and Nebula He was on the short story jury for the Nebula Award in 2002, and on the novel jury for the Nebula Award in 2003, 2006, and chaired the novel jury in 2008.
In 2005, Silver was one of the co-ordinators of the Nebula weekend in Chicago.
In addition to his writing and editing activities, Silver is involved in running science fiction conventions. He has chaired Windycon twice, founded Midfan and chaired the first Midwest Construction, and ran programming for Chicon 2000, the Worldcon. From 1998 through 2006 and again from 2008, he sat on the board of directors for ISFiC. He served as a vice chair for Chicon 7 in 2012.
In 2000, Silver appeared on Jeopardy! winning two days and coming in second on his third day.