There's a web site that lists iPhone apps that send data to third parties. There really are quite a lot:
<a href="http://i-phone-home.blogspot.com/" rel="nofollow">http://i-phone-home.blogspot.com/</a><p>I was alerted to it when my own app appeared in their list with two entries -- one for using Flurry analytics, which is true, and another entry for connecting to my own server, which only happens if you're running a pirated version.<p>I was astounded that someone would be so concerned about their privacy being violated... by the software they stole from me. If they're downloading cracked software from strangers I'd say that's a bigger risk than apps phoning home.