Yahoo and Microsoft: A deal made in heaven or hell?

It appears that the on-again, off-again merger talks between Yahoo and Microsoft have cooled once again, but they're not officially dead. And Google's acquisition of YouTube for $1.65 billion and pending acquisition of Doubleclick for $3.1 billion certainly make a deal between the #2 and #3 search engines more likely today than six months ago. But do Yahoo and Microsoft really need each other?

PC Magazine has got dueling opinions, with John Dvorak offering that this is still a bad idea, explaining that 1 + 1 would probably equal far less than 2. Lance Ulanoff, on the other hand, thinks the idea makes perfect sense. Check out their debate.