Boycott Microsoft Search!: I guess I don’t see the point.
“Microsoft is building a Web search engine, and they intend for it to become the industry standard. Given Microsoft’s track record during the browser wars, there is every reason to believe the company will again use its monopoly power to eliminate competition by building a Web search service into the next version of Windows.”
You’re hanging this on Microsoft’s respect for the robots.txt file. If enough boycott, Microsoft could just stop respecting the file (and provide sufficiently-spinned justification for it) or cloak their spider as an IE version.
What’s next — a lawsuit to force Microsoft to stay out of your site? There are bigger problems in the world.
(Personally, I just hope this means we get an HTTP crawler included in the next version of Microsoft Indexing Service.)