Directly from Google: http://support.google.com/webmasters/bin/answer.py?hl=en&answer=139394 Can the link be relative or absolute? rel=”canonical” can be used with relative or absolute links, but we recommend using absolute links to minimize potential confusion or difficulties. If your document specifies a base link, any relative links will be relative to that base link.
Consumers that support Microdata support Microdata, no matter if or where Microdata is specified. It’s conceivable that new consumers might decide not to support it, but the syntax is still very popular and still part of WHATWG’s HTML Living Standard, so it’s probably not going to vanish. About the consumer Google Some years ago, JSON-LD … Read more
This is of course invalid as per HTML4.01. META tags are only allowed within HEAD (just like, say, TITLE) so by putting it into a BODY, you’re essentially creating an invalid markup. From the cursory tests, it seems that some browsers (e.g. Firefox 3.5 and Safari 4) actually put these elements into HEAD when creating … Read more
As I state in my comment and you quote in the W3C, h1 is a heading and not a title. Each sectioning element can have its own heading element(s). You cannot think of h1 as being the title of a page only but as the heading of that particular section of the page. Just like … Read more
Is pushState bad if you need search engines to read your content? No, the talk about pushState is geared around accomplishing the same general process to hashbangs, but with better-looking URLs. Think about what really happens when you use hashbangs… You say: With hashbangs, Google knows to go to the escaped_fragment URL to get their … Read more
There is no benefit in having single or multiple data blocks, other than limitations around how you might store and manage schema data in your website. For example, you might need them separate if different components within your website are responsible for generating each data block independently. Alternatively, if your website is able to manage … Read more
In your example, the script element is used as data block, which contains JSON-LD (type=”application/ld+json”). JSON-LD is a RDF serialization. It allows you to publish Linked Data (or structured data) using JSON. In your example, the vocabulary Schema.org is used (“@context”: “http://schema.org”). This structured data can be used by any interested consumer. Prominent consumers are … Read more
I realize this question is old, but it’s still a top google hit, so I thought I would give an updated answer that includes popular social media sites. I generally have four groups of meta info: Regular Meta Info – used by search engines and browsers <title>{{pageTitle}}</title> <meta charset=”utf-8″><!– html5 version of http-equiv=”Content-Type”… –> <meta … Read more
Here’s a solutions if you want to disallow query strings: Disallow: /*?* or if you want to be more precise on your query string: Disallow: /*?dir=*&order=*&p=* You can also add to the robots.txt which url to allow Allow: /new-printer$ The $ will make sure only the /new-printer will be allowed. More info: http://code.google.com/web/controlcrawlindex/docs/robots_txt.html Advanced Usage … Read more
Prior to HTML5: The anchor has to be inside the header, you cannot put a block-level element inside an anchor, and most browsers will not render it 100% reliably if you do. In HTML5: It doesn’t matter, use whichever one makes the most semantic sense. Likely the first one. Remember that if your document is … Read more