Please take this advice to heart all you startups. I can't tell you how many times I have signed up for a new startup waitlist and then 6 months later I get an email from some ambigious startup name - "Your wait is up, time to join Uprocket" with no additional information. Wait, who is this, I don't really care anymore. I know its obvious to you but its not always obvious to others. Just add it to your signature for crying out loud. "Uprocket - We help startups solve the problem of people not knowing what they do by adding an email signature which tells people what they do"