That must have had close Apple review as part of the official iOS/Twitter integration.
The explanation underneath the 'Update Contacts' button is somewhat reasonable, though it may not register with most people that, barring some unlikely fancy indirection, to 'use' email addresses and phone numbers means they're being reported to Twitter's servers.
http://cache.gizmodo.com/assets/images/4/2011/06/ios5twitter...
That must have had close Apple review as part of the official iOS/Twitter integration.
The explanation underneath the 'Update Contacts' button is somewhat reasonable, though it may not register with most people that, barring some unlikely fancy indirection, to 'use' email addresses and phone numbers means they're being reported to Twitter's servers.