A lot of my users are complaining that emails are now not grouped in the same thread because of the addition of the poster's name.  Is there a way to edit the subject line and take out the posters name?

Anyone have any ideas?

You can change it in the Customization - Language and click on the advanced search (cog) and type email_new_ and remove the code for the username of the poster in the lines that correspond to the subject you are referring to. 

For example, instead of <a href='%s'>%s</a> has posted a comment on %s, you can just put Comment on %s,

Thank you.  I changed this one here and it worked fine.

{$comment->author()->name|raw} commented on {$comment->item()->mapped("title")|raw}