Earlier quoted context omitted.
Why would potential employees take this negatively? This is exactly the type of thing I'd love to work on. Give me opt-in to your web browsing characteristics, and let me optimize your searches. Opt-in is the key. I'm certainly an odd one here, but I'm more inclined to use the Bing toolbar due to this, although the perf cost is still too high to use any toolbar, IMO. What would be nice is if the browsers had an open…
Because if Bing has to rely on Google Search's solutions to problems it should itself be able to solve, that implies it's inferior technology.
Google leverages every legal scrap of information they can get their hands on to improve their services – including the outlinks of every site they crawl, and clicks of users all over the net. If there's a legal way to observe the users and content of Google's sites for info about which other sites are good – and I haven't yet seen an allegation from Google that Microsoft is doing something illegal – why should any company refrain from using those signals, given Google's giant use of such info from elsewhere?