i didnt have alot of time, but i bothered to go to cashadvance.com and they've been around since '97 .... Just a guess, but i can imagine using cashadvance.de in the exact same business as say a "cash advance" business might bring about little problems in the legal sorta way. But then again, I've see google loose some legal fights for this sorta thing. they of course were typos they lost to or was it a similar name, cant remember.
Anyhow, its a great term.. even if it cant be used to mimick and exhisting business there are uses... hopefully usefull to .de
Kevin.