I asked GoCoin what about accepting Wankcoin or TitCoin (they accept DogeCoin... joke for joke...), they replied: "We will certainly consider adding those if after doing some research there is enough transactional volume to adopt the coin.". So I understand the transactional volume of Doge was enough. Now if you go on
http://coinmarketcap.com and rank by volume (24h), what I see it is bitcoin 20m, litecoin 3m, darkcoin 1.3m, minerals 727k, dogecoin 584k, .... wank coin 2k LOL this is small. I see no tit or tits coins listed.
Going to check what sites accept Wankcoin, that's only the porn.com ones:
http://www.wankcoin.com/all-sites-that-accept-wankcoin/ lots of sites in their network, but that's just them, only them. People may think there's many different independent sites adopting wankcoin, that's a deal with one program only how I see it for now.
Anyway I see gocoin is used by metart to accept btc, lite and doge, so they may be seriouds about keep adult sites (I even asked directly - for what it matters)... and since I sure don't want to run a litecoind , dogecoind etc. server on my own to accept few dollars worth a year of these sales a year in best scenario, I may implement gocoin which it looks easy.
Much like implementing Epoch it adds lots of prepaid voucher cards and fancy euro bank systems, all at once... I think it makes sense a bitcoin processor should also add with time those other fancy coins, so you integrate once and get all these silly "me-too-coins" supported for free. I would avoid bitcoin-only processors as on long term I don't think transactions it will be bitcoin only, more like a mess of different coins (if not else, just to money launder better).