Log of visitors

So far I've only found two significant drawbacks to using Blogger instead of CommunityZero:

1. I can't find a way to display who has visited, unlike CommunityZero, where you can see all members and their most recent login.
2. I don't know if there's a way to automatically send alerts when there's been activity on the site.

If anybody has an answer to one of these problems, speak up!