explain nrsign & lsign?

[snowcrash+gnupg-users]

> YES, this would do it;

ok. thanks.

> however, proper etiquette would be to *not* send
> B's Key to the Servers, but rather to returned it 'Signed' to B and let
> B make any 'publication' decisions/actions.

understood.

> There are folks who are
> _very_ picky about their Keys being in General Circulation!

that said, is there any reason NOT to (or, any advantage to ...):

*l*sign "B" with "A", and, therefore, NOT distribute "A" to the
keyservers &/or via export -- and, instead, reference the "A"
trust-ing-pubkey @ a web page?

thanks.