Yes, we're still left alone into analysis this survey of internet marketers..
I go the email marketing way as a new focus because it's the most personal way short of sending them real letters.
It's more personal than facebook, twitter or rss feeds..
And yes with email marketing you can then direct the person to a page on your site where you embed a youtube video of yourself. And also you can send them to your facebook page, a particular post on facebook, etc.
I don't know, but I think email is the oldest way and it is still current today on every devices, mobile, lapttop, etc, and I think the number of email accounts beat any other service, even to create a facebook account you need to have an email address :-)