support for cetsEmbedRSS ?

I’m trying to make use of the tag-posts, post-indexer ala UMW Blogs suggestions.

Feed WordPress looks great for creating tag-specifc feeds from the TagsBlog, I just can’t see how to include this feed in my blog to see the results.

cetsEmbedRSS was suggested and the support link for that led here???

I don’t get any feed to work with that.