Here's a great little site for checking the security issues for mobile and internet enabled apps.
This is what they say about themselves:
"The goal of the WhatApp project is to establish an online resource where experts and other users can assess, discuss, and rate the privacy and security of mobile and Internet-enabled applications. Now in Beta, the website combines traditional consumer reporting and review tools with wikis and news feeds to allow users to make informed choices about the applications they download.
We want WhatApp to be a useful tool for both savvy Internet experts and novices to pool resources and share insights about the privacy features of a wide variety of applications, including Facebook and iPhone Apps, office suites, online maps, toolbars, and media players. The project’s aim is to fill the current market gap between consumer demand for privacy friendly applications and anti-privacy practices employed by the developers and thereby to foster better privacy practices Net-wide."
Go have a look: