I last posted on 10th Feb and here we are in late March and I now have 5 historical romances up on Amazon, and 3 of them going through the Smashwords game to expand into other formats.
Free books certainly give you a spike in sales, but I can definitely say that every time a new book goes up, there is more action. On the last 3, all have sold a few copies before I even did anything - not even waiting for the data to get onto Facebook and Twitter.
I suggest that every time you put up a new book, it's worth putting one that's already on there up for free.
On the other hand, if you want to publish to more than one platform, you can't join KDP Select on Amazon which is exclusive. The only difference for free days is that you have to set all the prices yourself and then reset them yourself after the free days end. With KDP Select, Amazon does it for you.
I figure it can't be too difficult to do it myself - I do know how - so with the last two books I've gone direct to Amazon and followed immediately with Smashwords instead of waiting for the 90 day period.
I'll let you know what happens.
Meanwhile, apologies for not posting more often. The problem is partly one of time, and partly due to my computer which is dying on its feet and keeps stopping to rest, leaving me waiting!! Fortunately I am getting a new one shortly, and that should simplify matters hugely.