In reply to logikal16.

If you use strictly shortcodes that can be the case, but that's somewhat the case with ANY shortcode plugin. However, on the buckets list page I actually list out the pages that contain the shortcode on them, that way before you delete something you know if it's being used or not! I was thinking ahead, I've come across this problem too. It's also handy for deleting any buckets that aren't in use.

There is also the actual Buckets Sidebar field. This doesn't use shortcodes, the buckets list page also shows what pages these are being used on as well.

Here's a screenshot to show what I'm talking about: http://i.imgur.com/wpGyIwL.png

It shows you the page it exists on and you can click it to go right there to remove it or edit it. Hope that helps!