A curious thing I've noticed recently is that a large number of startups don't include any information about the identity of the founders/employees.
I find this strange because, in my opinion, a big advantage of working with (or using the product of) a startup is that I can get to know the person (or people) behind the scenes. They might even be someone I know, or someone a friend knows.
I would go on, but I would just be repeating what Jason Cohen says in You're a little company, now act like one.
So, if you're part of a startup: please, include your identity and the identity of the other founders/employees somewhere on your website.