The Most Important Word in Publishing
Dustin Kurtz works for a publisher, and writes on their blog. His thesis is that authors do themselves a dis-service if they link to Amazon, and that they should instead link to some random small independent bookshop if they want to visitors to their websites to buy their wares.
In this piece, he omits the single most important word in the whole of the publishing industry. That word is "readers". He does mention customers twice, but only in the context of making sure that a bookshop is willing to post stuff to them and when he says "even if not a single customer finds them through you, [the bookshop] will be happy" - which is wrong. A bookshop to whom you direct no custom at all won't be happy. They won't be sad either, they just plain won't care, or even notice. Well, I suppose they might be pissed off if they made a special effort to stock your wares when you told them you'd be linking to them, and then didn't sell any. At no point does he consider even for a moment what readers, the people who are ultimately paying his salary, want.
Actually, the whole piece is confused. For example, he says that most people will go straight to Amazon in the first place and not visit author websites at all (which is probably true) but then thinks that that is a good reason for authors to not link to Amazon. Errm? The links to Amazon are for people who have visited the author's website and have not gone straight to Amazon. What people do who go straight to Amazon is irrelevant. Once someone has come to your website, they are, provided your site doesn't suck, yours, and they will keep coming back. Just like I keep going back to Charlie Stross and Hugh Howey's websites, via their RSS feeds.
But anyway, back to readers. What readers want is a combination of convenience and reliability. Amazon does both of those brilliantly, and with excellent customer service for the very few times that they screw up.
So, authors - please don't link to small local bookshops. It's far less convenient for your readers, who end up with a bazillion separate accounts with a bazillion separate online shops, and have to type all their details in a bazillion times, often fighting against idiotic web forms that simply won't accept their address* or phone number** or email address*** or whatever. Once the reader has fought through all that, he has to hope that your order fulfillment process works, that you know how to get stuff reliably to his door, and that if anything goes wrong you have heard of customer service.
Nah. Far better to just use Amazon.
In addition, I hear anecdotally that some authors make more money in Amazon Affiliates kickbacks than they do in royalties. If you don't link to 'em, I'll go there myself anyway if I want to buy your stuff.
* too many insist that all addresses have a state or a county, or don't have enough lines
** many won't accept phone numbers from other countries
*** many won't accept addresses with a + sign in them