I just went from 20-30 SEO visits/day to 0-10 visits/day. I think its because I links on some older posts going to tag pages that no longer exist.
I continue to refine the browsability of yocheckthisjam, I will probably be adding/removing a number of tags. Linking to these tag pages could then create links to non-existent pages. Also, as I am showing a tag cloud in my right column, all tag pages are linked to from all content pages anyways.
I wonder if adding additional links via RSS in the middle column affected my SEO traffic as well. I'm thinking that it didn't help.