Currently the stories, the names of authors, and the profiles cannot be accessed on OWL. Apparently the authors table is corrupted or has crashed, most likely due to a MySQL crash.
You can still save your reviews if you go to "search" and then click on "all titles". That gets you an alphabetical list of the story summaries and you can click on the number of reviews listed there to save them (copy & paste, or a tool like the FireFox add-on Scrapbook).
I have tried to contact the site owner and tech support, but since they haven't reacted to any e-mails or forum posts in over a year, I can't promise that the problem will be fixed.
Updates for the status of OWL will be posted to the official OWL LiveJournal community: http://owl-tauri.livejournal.com
(If I have the time, I'll try to post to the Yahoo Groups, too. But definitely to the OWL LJ.)