By default Sitebulb will crawl all Internal URLs with Query String parameters. However, on some sites you may wish to avoid this, such as on sites with a large, crawlable, faceted search system.
To stop Sitebulb crawling all URLs with (any) parameters at all, untick the 'Crawl Parameters' box. In the box below for 'Safe Query String Parameters', you can add in parameters which you do want Sitebulb to crawl, such as pagination parameters (e.g. 'page' or 'p').
To get to Advanced Settings, you scroll to the bottom of the main Audit setup page and hit the grey Advanced Settings button.
The Parameters section is under URLs -> Excluded Parameters