for example, why doesn't Yahoo just make YIM like Trillian or something, by allowing it to communicate with people on AIM or MSN or whatever?
They could still have you sign up for a YIM account. And they wouldn't have to include all the proprietary features of the other clients. It could just be like Trillian, where each network's client just supports the bare minimum for basic communication with the other networks.
They could still have you sign up for a YIM account. And they wouldn't have to include all the proprietary features of the other clients. It could just be like Trillian, where each network's client just supports the bare minimum for basic communication with the other networks.