Here is there notice on their site.

On Wednesday October 15th DVDSpot will be closed permanently. This decision was made to allow us to focus on other great web properties. We sincerely appreciate everyone's contribution to the DVDSpot community and hope you enjoyed the free services it provided. We understand many people will not want to lose their personal collection data, so we remind you that you can export that data to file by going to Membership Tools while logged in and clicking the Export to File button. This will create a file with all movies in your Owned and Watched lists. Also keep in mind the editor system for approving DVD additions and edits has been disabled, so no new or edited DVDs will be added.