Its a “questionable” site to visit while your Mother in-law is watching you on the computer 
Forum stats are different from general site stats, but to answer your question Niceday, a guest is someone tracked during their session with the site, so if you went away and came back 3 times within an hour, it’d count you as one guest as you would retain your ‘session’ with the site.
Yes, I’ve posted that many, but you have to remember I’ve been doing this since December 2004 
10k isn’t much, I’ve seen up to 100k on other forums, so by this standard, I’m pretty sparing with my words!