The Librarians of Second Life have constructed a virtual memorial on Info Island to commemorate the victims of Virginia Tech. Pictures of the victims are displayed on a wall, and when visitors click on the picture they are directed to short biographies. There is also a pillar with a list of names and a place to leave virtual flowers.
The memorial can be found right next to the Second Life Info Island Welcome Center. For those not yet on Second Life, I took some pictures, which are available on the ALA Washington Office’s Flickr page.