i am not sure if this is doable or not but maybe a feature where you can click on a person thats online and chat with them inside the website sort of thing. i just know emailing back and forth gets annoying. just a thought.
Your specifically implying like AOL's IMs, right?? Whoa *wiping head*.. thats gonna cause some straight up headache for X. But it is a good Idea though.. waaaaayy better then PMs. Yepps.. take it to the big man!!