[derefr]

> many of which are nonsense like one which was a 5-star review that said only "ok"

I recently got notified by the iPhone Things app with a message along the lines of "most people only rate the app when they delete it. If you're using Things, why not rate it right now?" and a button to go directly to the review page. I had no idea until I had clicked through that a textbox would be involved; I was expecting to just click on some stars and go back to my app.