I upgraded my site so that all pages have gone from using HTTP to HTTPS. I didn't consider that Google treats HTTPS pages differently than HTTP. I recreated my sitemap to so that all links now ...
There is another interesting question about status 303 and seo here but it does not answer me why status 303 appears now in GWT in the crawl errors section since end of January. In my understanding ...
On a shop website, when "Pay now" is clicked we perform a header redirection to the same URL, just an SSL secured https version. In such a common scenario, should we use a permanent (301), a ...