Welcome to WebmasterWorld Guest from 188.8.131.52
If i send these 10k urls to using 301 to my home page Google will treat low quality site and penalized the website?
Returning a code other than 404 or 410 for a non-existent page (or redirecting users to another page, such as the homepage, instead of returning a 404) can be problematic. Firstly, it tells search engines that there’s a real page at that URL. As a result, that URL may be crawled and its content indexed. Because of the time Googlebot spends on non-existent pages, your unique URLs may not be discovered as quickly or visited as frequently and your site’s crawl coverage may be impacted.. [support.google.com...]
part is redundant as you are not capturing or reusing the information, nor should you. The
also means the redirect only works if "new" is the first parameter.
I 301 everything to index still, do not care what John Mu says.