When a search engine robot crawls a website, it reads the pages and stores the information in its database. Then, it compares its findings to other information it has in its database. Depending upon a few factors, such as the overall relevancy score of a website, it then determines which are duplicate content, and then filters out the pages or the website's that qualify as spam. Unfortunately, if your pages are not spam, but have enough similar content, they may still be regarded as spam.
If you are using our dropship service, you "must" write original descriptions for your products. This can be hard to do if you have a lot or all of our products on your website, but it really is necessary if you wish to avoid the duplicate content filter and get your pages listed.
Our dropship site product pages contain a NOINDEX tag so the search engines do not use our site as the primary indexed page.
Here is a report showing the extent of the problem. This is a basic internet search for duplicate content for our top selling vibrator. As you can see it's the first 10 results of many more online. All these websites will never get this product listed on a search engine and if you use the same description you're going to end up at the bottom of the list and have no hope in getting this item indexed.
You must rewrite your descriptions to see search engines pick up your pages. Imagine traffic coming into your site from thousands of indexed pages every day. Changing your descriptions is the single one thing that will do the most for your business.