As I searched the Creators discussion forum for the last hour---this seemed to be a hot topic that has not been resolved.
1. Blog tags show up just fine at the bottom of a given blog but the same tag is not included in the Blog Topics By Tags on the Blog List page.
2. And, when I try to edit Blog tags within my own posts or that of other members there is no corresponding change to the Blog Topics By Tags list after the editing has been done.
I'm having this issue too. Hope to get an answer soon
Here is what I think is happening. If you go to the page, list of All Blogs, Ning for some reason has set the maximum number of tags 10.
However, if you click on My Page, and if you have created any blogs you click on My Blogs. On your my blogs page you will see more than 10 tags.
Does that help?