I got this message on 7-25-2012 " Dear bb53535,
Your Steam Workshop item Medic Minigun has been banned because it violates the Steam Terms of Service. The item is now only visible to you.
If you believe your item has been banned mistakenly, please contact Steam Support. Banned By: N/A Ban Reason: "Auto-banned because the community has reported this item 339 times"
The Steam Support Team http://www.steampowered.com