My client wants a Facebook button on his website page. I think it's because it's "stylish" at the moment, plus he'd simply like a link to his Facebook page. I'm reasonably certain he wouldn't look at any statistics about the number of "Likes".
(1) Is the presence of a "Like" button all that important for marketing purposes? Will it really help my client these days?
(2) Is there such a thing as just a "Friend us on Facebook" button that would serve just as well?
I don't have a FB account myself. I dropped mine several years ago: matter of distaste; and scrupulously plan *not* to join again. However, I found an address at which I might generate HTML for the client's "Like" button without myself having a FB account, if necessary.
You can't friend a company/business on FB. If they have a Facebook Page then you can add a Like button for that.
Like buttons help drive traffic to your Facebook Page where you can see some statistics. You can also make a Facebook account solely for the purpose of making and maintaining a corporate/business Page.