mirabile - 11:24 pm on Oct 6, 2013 (gmt 0)
We are using URLs w parameters and brackets bc of form submissions, long story. Brackets (apparently) are necessary because users can select more than one option from the search form.
Doing our best to otherwise to help engines discover the most important URLs that can result from form submissions (cue canonical tags), deal with pagination, and also URL inconsistencies due to encoded vs non-encoded characters. Whew. ;)