Sunbelt reveals that Twitter bots have been hard at work spamming users discussing (or just mentioning) the iPad with messages such as these:
In another instance, Sophos spotted an advert within a Twitpic page that offers the iPhone as a prize if you enter a competition that provides a perfunctory "spot the difference in the two pictures" quiz (in which, by the way, you can make as many mistakes as you want because you will be offered another chance to answer correctly).
When you provide the right answer, you are asked to provide various personal information so that they can send you the prize:
In this last instance, you could also incur an immediate material cost if you are not careful - the checked (by default) checkbox at the bottom of the page will sign you up for an alert service that costs £1.50 per week.