Experts slam `safe sexting` apps

Teenagers "sexting" using apps they think will protect their pictures are riddled with security flaws, experts have warned.

Snapchat more popular than Facebook Poke

Snapchat users can specify the lifespan of their picture and video messages, but once opened none can last longer than 10 seconds within the app.

Facebook creates private posts that disappear after being read

Social networking site Facebook has launched a new app which erases pictures and messages within 10 seconds of being sent.