Just my 2 cents: It's on my todo list to look for a weather provider, but the "pirate" in the name at first made me discard this: I guess the pirate bay made the word pirate something less-legal sounding, not something I'd want for a business.
Happy I did open it, and no problem to work with a pirate brand, but wanted to notice it might be negative branding.
Personally I quite like the Bright Ground name joke (and I don't think it will cause legal troubles, but IANAL).