Does this filter people at all, i.e., does it use the query string at all to filter people?

If not, it means we're going to break some links on the site, since e.g. http://openhatch.org/projects/openhatch links to http://openhatch.org/people/?q=icanhelp:%22OpenHatch%22

It's fine to break that behavior; we should just also check where we link to this old behavior, and remove those links, so people don't click things that won't work for them.