Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
sister in law
A sister-in-law is one's brother's wife, or one's spouse's sister. One's spouse's brother's wife is also consiered a sister-in-law. The plural of this term is "sisters-in-law".