Speaking of good UIs, I recently used not one, but two task management websites that had no tutorial (OK, no problem there) and... no tooltips for any of the te

Speaking of good UIs, I recently used not one, but two task management websites that had no tutorial (OK, no problem there) and... no tooltips for any of the textless icons. How in the world am I supposed to know what does what without clicking on them? Even then I'd forget. They were pretty unique icons, too :/ Please don't do that. Tooltips save lives :)