While I can't get it to find any of my listed friends, maybe I'm just using it wrong... People is a white pages for your iPhone!

<a href="http://people.aapl.org.uk/" title="People search for iPhone" target="_blank"><img src="http://www.modmyi.com/images/apps/people.png" border="0" height="160" width="320" /></a>

<a href="http://people.aapl.org.uk/" title="People Search for iPhone" target="_blank">http://people.aapl.org.uk/</a>