I'm impressed by that long vanity address 1MatthewNWrightisaScammer124DNsfX haha, wow. How long did that take to generate?
That address is a string with a checksum that makes it possible for the standard bitcoin client to send bitcoins to it. Like this one:
1BitcoinEaterAddressDontSendf59kuE Nobody generated a private key for that address. Those coins in that address can never be spent. Generating the private/public key pair takes time. Generating a public key with a good checksum is easy.
Any coins sent there will be lost forever.
Here is another one:
1111111111111111111114oLvT2