To speed up the process, what do you think of giving each member a choice as to whether messages sent to them within the site are automatically forewarded to their email?
This is pretty standard with phpbb like forums. The only things you would need to nut out is if it makes sense to include the message body in the notification (like facebook) or not (like phpbb)
I'd love to see an RSS feed about S2D activity as well. For my GetSatisfaction.com account, I can subscribe to a feed with all recent changes.
The feed could include S2D messages, but also other activities, for example a notification if somebody responded to my review request or commented on a guide I authored.
I like the idea of having some form of automatic notification of reviews: let me dig into this.
Done! you now have the option in your Profile to get notified when StartupToDo.com messages come in vial email, twitter or both.