Great article, on the electrocution issue, this was in the mainsteeam media a few years ago, and the conclusion was that it was a faulty charger unit. The shop selling them illegally imported the chargers which were not made to local standards. There were obviously serious consequences for the importer. It goes to show you should always buy chargers from reputable companies, for your own safety.
RE: Should you use your cell phone while charging it?