Clickbank questions

Hey guys I just need some help with a few questions, I already used the search function for this and I can't find the answers.

1. Which is a more effective landing page, text or video?
2. Instead of a landing page can I just write a review with a buy now button at the bottom?
3. If I have no intention to rank and just want to drive traffic by PPC, do I still need to rewrite the affiliate articles of the product? The articles are pretty high quality so I don't want to rewrite if possible.

Landing pages are more effective because they direct traffic to the sales page!
I don't write up articles and that is what works for me!

I would say video is the most effective, but not he most effecient...

Create landing pages or social authority figure accounts...

with social you can post all media content in one centralized location.

At the end of the day, it is what works for you!