Carsurvey.org now autosaves draft comments and reviews every 30 seconds, as long as JavaScript and cookies are enabled in a visitor’s browser. This is similar to the autosave features in WordPress or Gmail.

For most visitors, this means:

• If your browser crashes and you return to the site, your in progress review or comment will be automatically recovered for you
• If you’re writing a long review or comment, you don’t have to do it all in one session, as drafts are stored for 7 days

Getting this feature working across browsers was made much easier by the wonderful jQuery JavaScript library; I can’t recommend it highly enough.