Are you serious about web security? Upgrade it SHA-1 to SHA-2

After a couple of weeks of Google Announcement "Gradually sensation SHA-1"

I have tested some most popular web sites still using SHA-1 certificate by using this tool https://www.sha2sslchecker.com

microsoft.com, google.com, facebook.com, linkedin.com, amazon.com, paypal.com, 2checkout.com – still using a SHA-1 certificate.

I am shocked that announcer and other big brands aren’t serious about security and using weak algorithm.