An interesting quickie from eWeek's blog section. It's about embedding search facilities in browsers and how IE handles it, which makes it quite complex (as such things go) to switch default search engines. It's not just Microsoft, either. Google does the same thing. And I can imagine various other browsers following suit (after payment or other inducements)
Microsoft has already been in trouble for this sort of integration and I suspect they will be again. Fairness would demand Google and others are called to task for it as well.