I think the only way to do that at the moment is to delete your comment. :(

No, There isn't a way to yet. It has driven me bonkers on a few posts.

Really? Fixing that needs to be made a priority. Also, it would be nice if notifications about the same post could be grouped together like Goodreads/Facebook.

I think it was mentioned in that Make a Wish post several times. I'm also hoping that because we have choices in notifications in the discussion groups that they'll roll it out for our regular notifications.

Seriously. I'm tired of waking up to 500 emails from Booklikes.