Since yahoo has started using the caption it has been nice but there are still booters that bring in bots manually and terrorize and boot people ,yahoo still needs to go a step farther and put a restriction on the number of alike names that can come in to a room (such as cloned bot names and names with numbers,come yahoo follow up on what you started and make the yahoo experiance better for the honest users!
Yahoo couldn't give a toss about their chatrooms. They don't bother to moderate them and it has taken years to implement a simple capcha. Yahoo chatrooms reached joke status as they were 95% full of spambots.