As part of the casa particular site I tend to follow the search engines a bit.
When looking for "casa particular XXXX" where XXXX stands for the name of a city.
I have noticed that Google favors the "large" sites which often are the "reservation central" type.
Yahoo gives more "individual" casa sites.
I kind of like that as it favors the small guys (or at least doesn't "over-favor") the big guys.
My advise: at least also visit Yahoo if you are a Google addict.
If you are on Firefox a good way is to get the "CustomizeGoogle" extension. That allows you to quickly switch to other search engines for the current search.

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