Those who did know this often created secondary accounts --one for legitimate dates and another for their secret sexploits.
In addition to eliminating Intimate Encounters entirely, they are also only going to allow members to messages singles who are 14 years their senior or junior.
On this occasion, it’s the plight of walruses and their pups, who are seen struggling to find a place to rest when icebergs are melting, shrinking and breaking apart.
There are some utterly heartbreaking visuals here, the most egregious being the shot of a walrus desperately trying to hold its baby above the surface of the water.
I don't doubt Frind's altruistic intentions but it goes without saying that many advertisers, which are the bread and butter of their revenue stream, frown upon associating themselves with any shade of legal prostitution.
In the meantime, it looks like dirty old men will have to resort to finding their sexual partners the old-fashioned way -- on Craigslist.
On Monday, POF founder, Markus Frind, announced to members that the site will be undergoing some major changes.
"POF is all about relationships, I'm going to make a bunch of changes to ensure it stays a relationship-focused site, " Frind said.
What frequent IE users might not have realized was that if they searched for four or more Intimate Encounters, they triggered filters that blocked them from messaging members who did not want to hear from IE singles trolling for hook-ups on the site.
The technological advances between seasons are so huge by this point that with each new batch of episodes we not only get to see events in nature never before captured, we also get a supremely better look at familiar ones.
The latter is certainly true with the opening of episode one, ‘One Ocean’, which centres on bottlenose dolphins surfing waves “for the sheer joy of it”, and shows off their majesty with cinematography befitting of a feature film.
The fish, which can grow up to 5.5ft long and weigh more than 12 stone, spectacularly fails in its first attempt, missing the tern by several inches and plunging back into the water empty-mouthed.
But it later has more luck when it launches from the sea and acrobatically snaps a young tern with a sensational mid-air flip.