Seagate recently settled a customer lawsuit with Michael Lazar and Sarah Cho over the definition of a gigabyte. Gigabyte class hard drives are inflated by 7.37% because the storage industry uses decimal billion instead of binary billion. Since we now have terabyte drives and storage devices, the advertising will be inflated by 9.95%. This might have ramifications on the entire storage industry since none of them use the formal binary definition of gigabyte but the penalty may not look so bad after you've seen the online claim form and the hoops you have to go through.
To get 5% of the original net cost back for the 7.37% inflated gigabyte advertising, you either have to dig up the original receipt or you need the serial number on the hard drive. How many people will be able to dig up the receipt and how many people will crack open their computer case to find the serial number on their hard drive? I guess it's possible to use some kind of software to look up the serial number and it might be worth it if you have hundreds of these drives in a company. Most people don't even bother following through on $30 rebate forms when they have all the necessary paper work ready to go and you might get $7 back for a $140 hard drive. I have at least a dozen Seagate hard drives that qualify for the settlement so it might be worth my time.