[newbie] Is it okay to add a signature or vcard to email

[Romanator]

Hi,

After reading all of the angry emails, I was wondering if it was
acceptable 
to add a signature to my email to show my Registered Linux User number?
It is much easier than always typing it in every time I send out a
question or response.

Thanks,

Roman
begin:vcard 
n:;Roman
x-mozilla-html:FALSE
adr:;;;;;;
version:2.1
note:Roman - Register Linux User #179293
fn:Roman - RLU #179293
end:vcard