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However I will only have 50-200 words - all clickable
to other html pages relevant for the word.
My suspicsion is that when I have 95% of all the
words on the index-page clickable to other pages,
could this be punished in anyway from Google?
Should I try to insert mer text the get the percentage
of clickable words to go down?
Thankful for your thoughts,
I suggest you give your visitors some content to read on the Home Page.
"Clickable" is content too. You don't really need "sitemap"-type pages in SERPs. But (for instance) list of clickable titles of books in a specific subject is very "content-rich" for human eyes and for Google.
I had seen other information sites with the same format which ranked well but G clearly didn't like it when I did it.