I run a website called dotbit.me where you can register .bit domains (crypto-domains managed by the namecoin network). The raison d’être of the site is to make the process of registering domains as simple as possible (no need for any software or shell commands) and promote the .bit network.
In addition to accepting payment in BTC, LTC and NMC I am happy to say I just introduced the ability to pay with Primecoins and Peersoins. So if you’re interested in the .bit top level domain and own any of those five cryptocurrencies please give dotbit.me a try!
Dotbit.me has been online for about a year now and have over 800 users with just over 900 domains using our service.