yes, I cam across that when I investigated it & when I read the following I pretty decided putting awebsite on is fine:
'Identifying an aircraft is perfectly legal. If you put your name on your chute, it would signify that the chute belongs to you and would be no different than putting a name tag on a shirt. If you or your company own the aircraft, and you put an identifying mark, such as a company name, logo, web address, or the like, chances are no one will bother you. A phone number is usually okay. But sometimes you may need to register the phone number as a "Service Mark" or SM, to be a legal "identifier."
Crossing the line comes when you start putting messages on the chute that are not part of your logo. For example, "Eat At Joes," unless that is the actual name of the restaurant, would imply advertising, and would probably be looked at as being illegal by most FSDOs. It goes beyond identification and into the realm of sending a message, which is advertising'
cheers!!