Immediate thoughts:<p>Why would I learn to use yet another tool?  You already use it, you already know how to use it, but I would have to invest effort in learning its quirks.<p>Seems only to be focused on London, UK.  Is this right?  Didn&#x27;t work on three of the other major UK cities I tried, which makes it useless for me.<p>How would I find out about it?  What does it offer that I can&#x27;t get from Google or FourSquare?<p>Why should I invest the time and effort, with the risk that in a week or two it will disappear?