Yahoo's new search medium "Panama" is not currently equipped with the keyword tool. It's quite possible that they are currently in some type of a transition period and that the new search medium will soon be equipped with the keyword tool. If this isn't the case and the Overture keyword tool is kicked to the curb then we will have to subscribe to Wordtracker in order to get a tool like that with the kind of volume that Yahoo has. It's also possible that Google will make an addition to their tool by giving us the actual number of searches that a given keyword will get in a specified period of time. MSN's tool with only 8% still has a significant enough volume to capture any industry trends, new niches, etc.