New experiences

I had the opportunity to use PBwiki for a group project. I found it to be a useful tool, but had one rather unpleasant experience...and learned a valuable lesson. My group was working on a PowerPoint presentation and saving it to the Wiki so that we could make changes and additions as we had the time. The night before the presentation was due, I opened up the presentation and made my additions/changes. When I was done I uploaded the presentation to the Wiki. Sounds good right....NOT! At 10:30 that evening I went back to make some changes to the slide transitions, when to my extreme mortification, I found that all of my work was gone. since I had not saved the changes anywhere else, I was up until 2:30am redoing all of the work. I later realized that another member of my group was working on the presentation at the same time and uploaded his changes after me. By default his changes over rode (not sure that's a real word) mine. That's one feature of Wiki I'd like to see changed!!! The lesson I learned, or rather had reinforced was, no matter what....save your work to multiple places!