I'm a little amazed we haven't thought of this before.
Two days ago one of my readers promoted my book by sharing the link I had constructed to connect to my book's Amazon page together with a very positive review.
He is the first person to do that for me.
I have promoted by friend Conrad Leighton's Vietnam Diary, War Stories, A GI Reporter in Vietnam, 1970-1971. and I have also promoted Pete Morin's Diary of a Small Fish.
It's not insignificant that I have done that. I have more than 500 friends and if I do this for both books regularly they will reach an audience that otherwise might never see them.
We're a community of writer's assembled here in cyberspace. Why don't agree to do this for each other?
I'm going to promote Throwin Bones novel Untold Damage. I liked the book, I notice now that he's written more, I'll buy the new ones and promote them if I like them. I hope finally to get around to reading Litgal's, The Sister Queens, which I suspect I will like a lot. If I do, I'll promote it too.
I think that's the only rule. We should only promote what we really like, and that would require that we've read the book and decided it was worthy of our positive review.
I am very unlikely to read or promote many of the fantasies whose writers cut their teeth here, but there are enough of them to do that for each other. I will promote the books I like, and if we all do the same we'll be spreading the word far and wide
If your friends list is big enough, I might want to send you my book so you can decide... Though it would be much cheaper for me to reimburse you for the Kindle version.
Sharing our appreciation of other folks
I suspect in the end we would all have much greater market penetration. For some reason or other most of us have literate friends.