When to Stop Promoting a Product?

If you’re getting a 100 hits to a landing page, either from article marketing, or ppc, but only a few people are actually clicking out to your product, then you need to change your landing page.

But you’re getting people to click out to the vendor’s page, but still do not see sales, then your landing page is fine but your product sucks. In that case switch the product up after around a 100 hops