If you have the Yahoo toolbar on your browser, have you noticed lately that it says you have new emails waiting when you actually don't?
At first I thought it was just a bug. But after clicking on it a dozen times or so and finding no new email messages, it finally dawned on me what Yahoo is doing.
They're driving traffic and spinning their hit counters. The toolbar equivalent of phishing.
I wonder if Yahoo's advertisers realize they're paying for empty clicks.