Your storage is related to how many images/videos you are uploading to your Photobucket account.
Your account bandwidth, or linking bandwidth, gauges how many times someone has viewed your linked image on a 3rd party site.
To further explain, bandwidth is a measure of the resources used to serve (display) media from your Photobucket account to 3rd party sites (like blogs, forums, etc). The size of the image or video will increase the amount of bandwidth you use when you link out to other sites.
Direct views of your images/videos on Photobucket does not use any bandwidth. Bandwidth is only used when the image is posted outside of Photobucket, which we define this as 3rd party hosting.
Learn more about 3rd party hosting here.
Examples of bandwidth usage:
-Lets say you have 100 photos that are 1MB in size each, and you are linking every single one of them out to your blog/website. 100 images at 1MB in size means that you are linking out just under 100MBs in data size for all those images. Those photos would need to be viewed 100 times a piece to reach 10GB bandwidth.
-If you only linked out 10 photos that are 1MB in size, those 10 photo would need to be viewed over 10,000 times before you would reach 10GB bandwidth.
-If you had 10 videos on your blog/website that were 100MBs in size, that would equal out to just under 1GB in file size. If those videos were viewed 100 times total, you would reach 10GB bandwidth.