Whatsapp, an inexpensive app that offered a service similar to Apple's own iMessage but across platforms and iOS versions, has temporarily been pulled by the app developer for reasons not yet made clear. The company recently patched a potential security issue, but says this has nothing to do with the unavailability, and that it has "submitted a new version and [is] awaiting approval by Apple." It has also published a blog post warning users of hoaxes circulating about the app.
