Attachments in the cloud
Thanks to this great redmine plugin all attachments (in tickets, forum posts, etc) are now hosted on Amazon S3. It will eventually cost the project a tiny sum of money but I think it's worth it. To celebrate (?) this I've also cranked up the maximum limit for attachments to 500 MB.
Some of you have avoided attaching content to tickets to avoid exposing content to the public. If you want to avoid that you can mark the ticket as 'private' and only developers will be able to access the ticket and its attachments.