This report displays information about the query strings used to access your web site. Query strings are data after a "?" question mark in the URL. For example, in the URL "/index.html?var1=fred&var2=wilma" the query is the entire string after the question mark. Variable "var1" has value "fred" and variable "var2" has value "wilma".
Query strings are typically used in dynamically generated sites. You can also use them to track hits from partners, advertising campaigns, and click promotions by putting a different value for a common variable on each different campaign you run.
This report is most useful in conjunction with a filter by requested page name.