Promotion

I received email Subject is Yahoo! Internet Lottery Winner
Yahoo! Mail gives members random cash prizes. Today, your account is randomly selected as the one of 5 top winners accounts who will get cash prizes from us.
We are happy to inform you that you have won a prize money of (Two Hundred and Fifty Thousand Pounds Sterling (£250,000) for this year YAHOO Internet Lottery Promotion which is organized by Yahoo Messenger.com every Year.

, collects all the email addresses of the people that are online on yahoo messenger, among the millions that subscribe to yahoo messenger. We only select five people every year as our winners through electronic balloting System without the winner applying, Hence we are congratulating you for been one of the people selected.
All participant were selected through a computer balloting system drawn from Nine hundred thousand E-mail addresses from Canada, Australia,
Can u guide me please either this is tru or a fraud? Thanks