Your PGP program won't encrypt to an invalid key no matter what, so as longas your PGP program treats any key as valid to encrypt to, you're ok.The previous response above that says PGP Desktop is a 'shitty' program notlicensed to sell PGP keys is stupidity of the worst sort. PGP Desktop isthe program that was written by the inventor of PGP, Phil Zimmerman, andthe commercial implementation of it was licensed to PGP Corp, who latersold it to Symantec who run it as an enterprise encryption solution. Thenot-licensed for commercial use means just that, it's a free ortime/feature limited version for personal use only. Nobody needs to be'licensed to sell PGP keys'.Note that the comment line after the ---Begin--- line can contain anythingat all, it's ignored for encryption, decryption, signing and verification.Information about the protocol used is encoded in the first 22 charactersof the key.