-hub

From a , ultimately from hub ("a central facility providing a range of related services").

Full definition of -hub

1 April 2016, Bill Chappell, Stamos Documentary? Trader Joe's Closing? Cornhub? Must Be April Fools' Day, In a move that we confess to not anticipating, the adult website Pornhub pranked itself by "cornifying" its landing page, which it renamed "Cornhub" and adorned with scenes of steaming corn.
2 December 2018, @ThaHypeIsReal, poor fella, can't watch doghub in peace.
4 September 2019, @abnrml__, Imagine a wesbite that posted nothing but food porn called foodhub.

, More like... Yiffhub?

26 December 2021, What’s a good site for femboy videos? Please link!, XVideos.com has a better selection than Pornhub.com from what I can tell. There really should be a specialized site, like a FemboyHub or something.
17 August 2022, @chidofi, At this point Netflix should just change its name to gayhub, cus wtfff I’m here to watch a bloody show not watch two men fu*k!!!! So traumatizing.
17 February 2023, @SageFayla, to a humorous tweet of a cat licking its owner's hand entitled "Nothing like a pussy lick in the morning" Ohh thats a little too hot for twitter I think...might have to move that to Cathub...