Can I give negative stars?

Terrible app. Cant see who is online. Not sure why yahoo would thinks thats a good thing or a "feature". I repeatedly get notifications for messages that are weeks old. There was nothing wrong with the previous versions. This total overhaul is awful. More evidence of what a lousy job marissa Mayer has done at yahoo. Her focus was supposedly on mobile and this is what we end up with?

Ganthet about Yahoo Messenger - Free chat, v1.4.0