Sure. Here were some sample URLs that I can see in Google Analytics.
http://www.helloforos.com/search?context=topic&context_id=14962&q=Thalia
http://www.helloforos.com/search?context=topic&context_id=559&q=Venezuela
http://www.helloforos.com/search?context=topic&context_id=12187&q=justin%20bieber
or searching for a user:
http://www.helloforos.com/search?context=topic&context_id=9641&q=Felina24
It’s possible that a user will uncheck the checkbox, but just thought it was strange that it was defaulted to search just the topic on mobile.