First, My compliments to the author for a superb plugin. Works very well and highly recommended.
I enabled the "Add list automatically right after post content" option and set the "Max number of search terms" at 50. The result is that the search terms that visitors were using to find my site got printed on the page.
This appears to have been seen as "keyword stuffing" by google bot with the result that the my pages have been deleted from the search results (they used to appear in the first five).
I have now disabled the option to print on the page.
(i) Has anybody else had a similar experience?
(ii) Any idea how long it takes google bot to re-include the pages?
My suggestion is that even if you choose to print the search terms on the page, keep it at the default of 10.