Google Webmaster Central
Though Google hasn't explicitly said how repeated spam violators will be punished, the company said multiple violations "may make a successful reconsideration process more difficult to achieve."
The robots.txt testing tool in Google Webmaster Tools has just received an update to highlight errors causing Google not to crawl pages on your website, let you edit your file, test if URLs are blocked, and also view older robots.txt file versions.
Yandex has made the move to encrypted search. The Russian search engine has begun encrypting 100 percent of searches done through Yandex, meaning webmasters with traffic from Yandex, will now see "(not set)" or "(not provided)" in their analytics.
Google has added to the Fetch as Google tool in Webmaster Tools, allowing webmasters to render their webpage as Googlebot sees it and address any issues. You can Fetch and Render for Desktop, Mobile: Smartphone, Mobile: XHTML/WML or Mobile: cHTML.
PostJoint has reconfirmed their penalty in Google. The penalty was for unnatural inbound links, which seems to be Google's stock penalty for blog networks. It was not a new business model violations penalty, as has been reported elsewhere.
Google is going after websites that misuse structured data markup. The new penalty affects websites that violate Google's rich snippets guidelines, such as including authorship on home pages and reviews on pages where there are no reviews.
A new section within Webmaster Tools offers a portal for "Security Issues" to alert webmasters when they have a security issue or evidence that a site has been hacked, as well as give more detailed information on the nature of the issue.
Google has announced a change to the way Google Webmaster Tools serves backlinks to users. Now, instead of getting a huge list of backlinks in alphabetical order, they are giving a better representation of all the backlinks.
The disavow tool is a very valuable tool to webmasters who need more control over off-site issues affecting their search rankings, but it isn't the game changer some people are making it out to be. In fact, it could be harmful in the wrong hands.
What can in-house SEOs do if/when Google’s algorithm updates, such as Penguin, hit your website hard? Besides avoiding SEO shortcuts to get your site top rankings on search engines, having a plan of action and creating a long-term plan can help.