When a reader uses Sharedaddy to email a friend, it only asks for the friend's email address, and uses the WP install's default reply-to address. Every other "email a friend" implementation I've seen asks the sender to input their email so that the recipient can reply if desired.
Why does this matter? Most people don't notice that they're not replying to the person who emailed them the article, and it's strange and time consuming to manually forward replies to the original sender.
Does anyone else have this problem, and/or know of a solution or workaround without abandoning the use of Sharedaddy?