YouTube radio: part II

I wrote a few weeks ago about using YouTube as a radio; just using the video site as a source of music and minimising the videos. It sounds like a great idea - it's a virtually endless library of music. However nothing has brought home to me so clearly the value of recommendation engines as trying to use YouTube as a radio for a couple of weeks. Presented with just a search box and my own recollections of what I like to listen to, my mind goes blank. An embarrassment of riches is one thing, but I feel like the donkey that starved to death because it stood perfectly equidistant between two bales of hay.