Make sure to submit it Friday afternoon/early evening :)
EDIT: I checked out leadnuke; it seems super useful. Almost like a "read later" for leads.
I also like that you DIDN'T add fancy HTML emails or anything, because that would ruin the impersonal nature of it and cause people to ignore you because an email looked too fancy or spammy (or whatever).
Please submit leadnuke again as it matures, I'd love to hear more. Also it would be nice if you added your email to your profile, especially since your email is not found on your sites (from a quick search).