proposed crackdown being bandied about in British parliament, an Essex teen has been arrested for sending a BBM that ran afoul of the Serious Crime Act of 2007. The 18-year old, now free on bail, allegedly used the service to encourage copycat attacks of the violent rioting that's swept London, and is set to appear in court on September 1st. It's the second known case to put RIM's private messaging service -- "popular among urban teenagers" as a cheap texting alternative -- in the UK's legal hotseat. For its part, the Canadian electronics maker has since reached out to police, promising to aid the investigation "in any way [it] can." Although no decision has yet been made to extend law enforcement's powers over social media services, such as Twitter and Facebook, arrests like these seem to indicate a murky free speech future.