All the best crack peddlers know that you must speculate to accumulate - offer the first hit for free and two weeks later they'll be begging for more and borrowing money off Carol Vorderman's loans company to pay for it.
Well, it's probably a business stratagem that Blizzard is familiar with, too - which would be why they're now offering European gamers the chance to try out World of Warcraft for free.
Sign up for the trial over at the WOW website, download the client and you'll get ten whole days of free access to the game. And a brand new addiction, most likely.
Just remember, kids - there's a monthly subscription fee of £8.99 to pay once the trial is up. You might think you won't get hooked, but so did Zammo.