Previously… Marco Polo is a new 69p iPhone app for helping you find your phone when you've left it around the house. Just shout “Marco!” and your iPhone will reply “Polo!”.

The trouble is, it doesn't work for women. Or children. Or the Bee Gees. Hats off to The Unofficial Apple Weblog for bothering to test it out – and hats off to the app's maker, Matt Wiechec, who's taken TUAW's criticism and is dealing with it.

Read their coverage of his response and hear their test of the app too.