Great plugin. I do have a question though. Is it possible to only have this on some of my posts/pages? I prefer not to have the option on all of my pages. Any way to only do it on some?
Also, I really don't mind the email address being requested but since you don't seem to give me the email of the person requesting it from my site, what are you doing with them? I'm not sure I like the idea of the emails from users at my site going to a 3rd party.
Since I don't get the email addresses I would prefer to not do it that way.