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[edited by: Andy_Langton at 4:42 pm (utc) on Sep 26, 2012]
Sure, if the business has a physical presence. But authors of dead-tree books don't publish their personal mailing addresses for all to see; why should blog writers be any different?
But they all put their name and photo on the dust cover - and Google+ verified authorship is much closer to that than asking for a physical address.
But they all put their name and photo on the dust cover
People want recognition and when there is a source available then why not use it.
Of course, I don't have any Barbara Cartland, or Geoffrey Archer
how many people look up the author of an individual article to find out if it's someone reliable?
It has been suggested that the authorship tag will indicate to Google that you have the original content
Here's a benefit, an extra three author links in the SERPs: Bonus Links After a Back Button Click [searchengineland.com]
Wow, this is important. Interesting stuff there. Maybe not enough people adopting G+?
...which is strongly against some of the 'conventional wisdom' you may hear.
It's obviously a part of the algorithm if they are using it in this instance