Photobucket have changed their terms of service and you now require a $399.99 USD/yr subscription (P500 account) to allow 3rd party sharing of photos (using the IMG code). If they haven't already THEY WILL replace all your shared images with a Photobucket message advising you need to upgrade to a P500 account (The actual image stored on your account will be safe).
As my photo links are currently broken and I will be removing all photos and closing my Photobucket account and finding another host. I would recommend others do the same
Types of Accounts, Pricing and Limits
Visiting : There is no cost to visit the Site or to register as a Member.
Free account : Each individual Member gets one free account that provides 2 GB of free storage or space available for your original photo files, or videos under 10min. The free account does not allow any image linking or 3rd party image hosting. If a free account Member exceeds their Content Limit, their account will be immediately suspended and they will need to become a “Paying Member” (defined below) in order to continue accessing their account. You can upgrade to a Plus account at any time.
Ad-free Account : The Ad-free Account offers Members the ability to use the Site without seeing any third party banner advertisements when logged into your Ad-free Account (note, viewers of your images within Photobucket will see ads unless they, too, have Plus accounts and you will continue to see Photobucket offers and announcements). This account level is available for $2.49 / month, payable by the Member on a monthly recurring basis.
Plus Account : The Plus Account offers several paid options that may give the Paying Member more storage, bandwidth, 3rd party image hosting, image linking and/or other services as outlined below. Once and during such period of time in which you subscribe to and pay for a Plus Account, we will consider you a "Paying Member." Please note that all Plus Account subscriptions are billed annually at the commencement of the service. Photobucket may also offer a monthly billing option for its Plus Accounts (see terms and restrictions, below).
Available Plus Account Plans : Photobucket offers the following Plus Account Plans:
o Plus 50 Plan: 52 GB of Storage for $59.99 / Year. The Plus 50 Plan does not allow any image linking or 3rd party image hosting.
o Plus 100 Plan: 102 GB of Storage for $99.99 / Year. The Plus 100 Plan allows for unlimited image linking but does not allow 3rd party image hosting.
o Plus 500 Plan: 500 GB of Storage and unlimited bandwidth for $399.99 / Year. The Plus 500 Plan allows for unlimited image linking and unlimited 3rd party image hosting