AngelList used to be like that but things have changed. =)

Most of the updates that investors receive are determined by who is involved in your company (advisors, investors, references) and the level of interest in your company (follows, intros). If you add people to your company over time, these notifications will still go out. So no need to have the ultimate profile when you publish -- I would still make it great though.

We still review every new startup because our algorithmic updates can't pick up every good startup. So your startup shouldn't look awful when you publish. If it looks promising, we'll ask you to ping us when you've made some progress. And, in any case, you can still ping us.