Sylvia and I were discussing

Sylvia and I were discussing over the weekend: with all the voice over IP stuff that's happening now, when's someone going to come out with a web-based intercom? I'd like to have a list of people (maybe this is integrated with ICQ?) who are online and available, and with the click of a button, I could speak into my mic and chat with them. Man that would be handy. Since I don't have the time to build any other products, could someone make this for me, and let me know when it's available? Thanks.