JaGeX contacted them earlier this year and told them if they didn't halt all action, they would sue... Whats his name, starts with an N, the owner. So he transferred ownership to some guy in Korea, in hopes that since there are no servers in Korea, (Or was it china?) that they had no legal reach there. Well, good fight. Now they're APPARENTLY suing both of them.
Word is, the domain was taken because it had RS in the name. Which put a bit of a scare in the community, because for all we know Rsbots.net, Rsbot.com, RSbotting.com could all be next.
Don't think they'd attack sites like this though. Atleast... Let's hope not.