I'm not one to click on advertisements usually.  However, because of my vested interest in anything Google / YouTube, if I ever see something related in an advertisement, I am inclined to see what it's all about.

So I saw an ad for Bing.com - supposedly a site that you can search videos on.  I clicked.  I was taken to some poorly designed site (looked like from the year 2000) that just dumped a whole bunch of videos on a page.  Immediately, my Flash application in my browser displayed an error notification.  Immediately following, it crashed my entire Firefox session, and I lost everything I was working on.

Great job Microsoft (owner of Bing.com) - keep it up and you just might go bankrupt like everyone else.