Oh it is messed up all right.
I logged into Facebook to check out the usual various multi-tool and photography groups when I come across a group I have never heard about. I clicked on it out of curiosity, something I have in abundance. It was eye opening to say the least. The group is some Daddy kink group.
What I would like to know is this...how the heck did that show up in my algorithm feed? 
Keywords.
Years ago we had a similar issue with an ad service. It would take keywords from the site, search eBay for them and then post ads showing listings that matched those keywords, which sounds great on paper... but....
A Leatherman is a term for the fine, upstanding gentlemen at the Blue Oyster Bar, and if you aren't familiar with that, or the biker from the Village People, then you will just have to Google it and deal with the consequences if anyone finds your browsing history.
A Bear is similar to the above, but with a little less leather and somewhat more... shall we say "naturally insulated" against the cold.
Gerber is a company that makes baby products, including bottles and the pliable, perforated items found on the tops of them, which simulate a natural, anatomical delivery item.
And then frequent uses of suggesting terms like the shaft on a screwdriver, tool in general and repeated discussion of varying levels of what Rockwell is famous for measuring didn't help matters.
Not that we here at MTO have any issues with any of that, it just didn't really result in accurate matches and didn't benefit this site or the advertisers significantly enough. There is a term for an arrangement that was unsuitable for all parties involved, but I feel like we have had enough innuendos in this post already.
Def