The Live! chat feature should be embedded into the page. It's very often that users will use the Live! page to load other links, as a result, the chat will be shut down, and this cause a lot of hassel to restart it. JMHO. As far as I know this is the V2.0 "bug", because they want to make digichat to run smoothly in most platforms. However, V1.5 can have the chat window open and you can still use the login page to load other stuffs.
For the advertisement links, I think I've mentioned it, they don't open up in a new window... you know the rest.
signed,
Bernard