The yahoo IM program on the MAC is not as good as the windows version. I can't save my conversations and it constantly logs out and I can't even tell. I actually have to QUIT the program. There is no option to simply sign back in. And because I always have to restart the program, I lose any of my conversation windows that I had open. In the Windows yahoo IM, there was a way to see your history. Is there a better program that links to yahoo IM and can retain your conversation history? The app on my iPhone isn't great either.