Here is why the forum accepts Grin ~sniped~
I'm super excited about
grin. All past altcoins have been just Bitcoin with a few bits tacked on;
occasionally these extra bits are useful/interesting (eg. Monero or Ethereum), but in the vast majority of cases this extra stuff is just meaningless marketing-oriented garbage. But grin is packed full of useful innovation from top to bottom; moreover, it's clearly built in the same cypherpunk spirit that Bitcoin was: increased freedom/sovereignty through technology.
Therefore, I'm happy to announce that the forum is now accepting grin payments automatically, probably the first site other than exchanges to do so. You'll find a link at the bottom of the evil-fee and
copper-membership pages.
Taken from the linked post above
no, grin is not dead yet, but we have to be careful, and try to analyse clearly what works and does not work.
Overall it's a non-issue really. theymos used to maintain threads of Alt coins he thought were promising so it's not surprising he decided to add a coin that peaked his interests to the forums accepted currencies. There is also no negative impact to the forums finances as theymos stated this in the announcement. The entire quoted announcement has more detail on the why.
Currently I own zero grin (though I will be buying from the forum all grin obtained), I was not paid to add grin support, and in fact not a soul knew that I was going to do so. grin support might be removed later if it dies off or becomes too time-consuming for me to maintain.