"Explore a world of publications by people and publishers alike. Collect, share
and publish in a format designed to make your documents look their very best."
"A collection of online resources of use to
dromography, or the comparative study of organisation, history, geography, and logistics of movement, transportation and communication networks.
This site is a part of the Old World Trade Routes (OWTRAD) Project."
Haven't used this particular whiteboard/collaboration site but have had trouble with others in the past and this one works on the school server...so far...
"Classtools.net allows you to create free educational games, activities and
diagrams in a Flash! Host them on your own blog, website or intranet! No signup,
no passwords, no charge!"