It is very interesting to see how the search engines wars will shape up in the years ahead.
I simply love Google as they are without doubt the best thing to happen since sliced bread. But that statement applies to where you are in the scheme of things. And how great they will stay is starting to unravel.
For those of you who were born recently, you'll find that there is a system of old money in place that does not want that scheme to change ever! The bigger the foundation, the more true that statement becomes.
Old money will always to find a way to monopolize as much of the trading buck as is possible. And this is why search engines scare the heck out of old money. Especially if you have a search engine that can determine where your cash can be spent.
In the old days, you had to pay for expensive Yellow Pages, TV and Magazine advertizing to get your brand known but a computer network [internet] can give small business just as much brand awareness for free [if your SEO really knows what he is doing].
So, selecting a search engine to personally use comes down to knowing where you will end up if you use it. A string of related companies [by ownership, co-ownership etc.] can create and promote a search engine that will bias all potential sales to their own group of websites.
I wouldn't go so far as to say Bing is an example of this as I have noticed Bing is started to list more smaller businesses these days. Maybe that because they are seeking the advertizing revenue too? Someone else can research that. But at this time, Google is starting to waver. It seems they are trying to please the old money crowd instead of simply returning clean good page results for any genuine business. They do have big and difficult job even without trying to give preferential leads to their income source but it seems weird no independent has bothered to come up with a unique search engine in all these years to rival the juggernaut. I really don't know why. It is obviously one of the most lucrative online activities. I am sure it would make a fantastic project for Uni Student across the globe to work on.
DuckDuckGo.com has an interesting twist on search results. They endeavor to re-interpret search results of the big guys and return a selection that is not weighted by favor. In other words, a more true actual search result. So, if you are wondering "how is my SEO work really performing?", then you should run your tests through this nifty search engine.They might become a power house to watch in the coming years.