The more links posted in the blog and on sites the more prestige on google searches because of the clicks readers use. Invite your readers to click on your links, not on google ads, unless the ad is yours, remember google gets the money. You get prestige by reader clicks.
So what if you have an audience of 5 or 20 people on a blog, no worry, web surfers come, observe, read, share, and slide on through. Your audience clicks matter for your performance on databases, even if having many sites with modest audience interviews will still reach many people. On each blog, check the analytics for your post to find out how many viewers looked at the post. Your newsletters (I use MailChimp.) show the clicks you receive and on what links the reader clicked.
Author blogs, performances, and books with links I post in my newsletter, EVENTING…; the more places a book or blog is posted the better for expanding different audiences and stretching hyperlink connections.
About eight years ago I heard a lecture about linking from the networking genius who programmed the first hyperlinking. When we surf the vast net we see what this innovation offers for us.
My round-about where my sites are listed,