You can now subscribe to comments in your feed reader of choice on most Blogger blogs in Firefox by going into the particular comment thread and clicking on the little “feed” icon and choosing the last “Atom” feed listed. (There is also a direct link at the bottom of some, but not all, Blogger blogs to do this.)
I also updated the market paranoia PSA recently, with links to all the rumor blogs I know about and the current and 06–07 wikis. As always, I remind readers that I am not the proprietor of any of said blogs or the wikis.