Welcome to the Q&A Forum

Long story but now i have a few links from my site 301 redirecting to youtube videos or eCommerce stores. They carry a considerable amount of traffic that i benefit from so i can't take them down, and that traffic is people from other websites, so basically i have backlinks from places that i don't own, to my redirect urls (Ex. http://example.com/redirect) My problem is that google is indexing them and doesn't let them go, i have tried blocking that url from robots.txt but google is still indexing it uncrawled, i have also tried allowing google to crawl it and adding noindex from robots.txt, i have tried removing it from GWT but it pops back again after a few days. Any ideas? Thanks!

It's a well known fact that too much thin content can hurt your SEO, but what about when you disallow google to crawl some places and it indexes some of them anyways (No title, no description, just the link) I am building a shopify store and it's imposible to change the robots.txt using shopify, and they disallow for example, the cart. Disallow: /cart But all my pages are linking there, so google has the uncrawled cart in it's index, along with many other uncrawled urls, can this hurt my SEO or trying to remove that from their index is just a waste of time? -I can't change anything from the robots.txt -I could try to nofollow those internal links What do you think?