Hi Lt. FallenAngel, welcome to Emerald Gaming. I honestly doubt you'll stay, but I sincerely hope you return, so I can address any further concerns you have.
I'll be quick and blunt, though. We aren't stealing any of your ideas. We're a general gaming forum, you're from a HL2RP group. It's a group, right? Forum? I tried googling everything, but I can't really find anything.
Anyway, what's in a name? Certainly not a stolen idea. We simply happened to come up with the same name for our respective groups/forums. EG was initially a Sonic the Hedgehog-oriented forum. Emeralds play a huge part in the series, as the 7 Chaos Emeralds are basically the series' magic macguffins. Kinda like the Dragon Balls from that one anime. Only shinier.
Now, I'm not sure where your group got Emerald Gaming from, but it certainly is a nice name. But, I never heard of you guys before now, and the opposite is likely true. If we aren't getting in each others' way, wouldn't it be easier to just co-exist? I don't think it'll do much harm.