Avoid Google keyword detection picking up Firefox ‘aq=’

For those of you who are monitoring or stripping keywords from referrer strings from Google you may be seeking out the query string parameter ‘q=’.
Beware that a simple string match on ‘q=’ could lead you to match on the additional Firefox parameter ‘aq=’. This appears in a Google referrer string if the search terms were originally searched for from the Firefox searchbar.
The aq=t parameter was added by Mozilla in 2006 at the request of Google.

Make sure that any string matching you’re doing is looking for a preceeding ampersand (&) or question mark (?) so that you match the ‘q=’ parameter correctly.