blogger site feeds for labels (tags)

If a blog you read is using labels and also has site feeds enabled, then you can pick and choose which topics you want to subscribe to. The format for label feeds is this:

http://blogname.blogspot.com/feeds/posts/default/-/labelname

Be sure to substitute in the correct blog address for blogname and the label you're interested in for labelname. Also, don't miss the hyphen ("-") in the URL. That's not a typo!