I think that you may have mistaken this for a swinging or hook-up site.
While a number of polys may also swing or be into casual sex (online or otherwise), the focus of most of the threads here on polyamory.com is more on cultivating multiple (poly-) loving (-amory) relationships. (Which isn't to say that OTHER forms of ethical non-monogamy are bad, just that that is not the focus of this forum.)
Good luck in finding what you are seeking.
Me: poly bi female, in an "open-but-not-looking" V-plus with -
MrS: hetero polyflexible male, live-in husband (24+ yrs)
Dude: hetero poly male, live-in boyfriend (5+ yrs) and MrS's BFF
SLeW: platonic girlfriend and BFF
Lotus: "it's complicated"
+ "others" = FBs, FWBs, lover-friends, platonic G/BFs, boytoys, etc.
My poly blogs here:
The Journey of JaneQSmythe
The Notebook of JaneQSmythe