is it ok (won't be banned by google) to explicitly put a block of keywords on a webpage, like this: "search term: targeting keyword 1, targeting kewords 2, targeting keyword 3, ...., targeting keywords 49, targeting keywords 50" and the "targeting keywords" link to the page itself.
Google may suspect your site and it may be a reason for your site to be reviewed. Just maintain a minimum set of keywords to avoid penalty from google. It is pretty hard to reconcile with google just in case your site had been banned. Good luck pal!
I would advice you to avoid this.. You may want to ask yourself if this add value to your readers / consumers.. SEO is also about providing valuable content to the users.