It was only time they did this. Targeted ads by the topic of the mailing list and/or what is being discussed. Not sure if they're going to do that, but they can do the same thing they're doing with Gmail. Here are some features:
-
Group creation: Users can easily create, join, and search email-based mailing lists; administrative interface enables customized access controls to designate a group as public or restricted
-
Dynamic conversations: Postings appear within 10 seconds and are indexed within 10 minutes
-
Enhanced user interface: Users can track and mark favorite topics using the "My Groups" feature and view postings in a variety of ways including by message summary, title, or conversation view
