I have a Sharepoint site with several custom lists, and lately some people started to use "List > Connect to Outlook" (from the List panel while viewing a List) in order to read and reply to discussions directly from Outlook.
While it's a very interesting feature, it became a nightmare after a few days. Several discussions have been deleted by those users, probably because they had removed the entries from their Outlook (probably assuming it would only clear the discussions locally, just like an email).
At least we were able to recover those important discussions from the site collection recycle bin, but I would prefer finding the root cause of this and then provide them with a solution to the problem.
Is it possible to block the deletion of list entries and comments from Outlook?