Are magnetic cell phone cases safe?

[RICH]

I recently purchased a blackberry phone and in the box, it came with a case with a magnetic closure. I thought that magnets were harmful to devices such as cell phones, MP3 players, and computers. Which is why I'm wondering if the technology has changed? or if the magnet is not strong enough but its a pretty strong pretty. stronger than I thought.

[Charlz]

i have used a magnetic phone case in the past and still use one today on my Nokia 6500 slide. there has not been any problems with my phones as of yet so i would say there pretty safe to use.