Validating site blacks internet dating
Google Webmaster tools such as Ad Sense and Analytics are available from Google which let you provide advertising and tracking of your website.
To use these features you'll need to validate your site with Google in advance.
For example This is a sentence validates under html 4.01 transitional or html5 where the closing tag is not required, but not under xhtml 1.0 transitional where the closing tag is required.
Your doctype is setting the language you’re using and code that’s valid under one doctype may not be valid using another.
In Web Plus, two methods for validation are possible—by HTML download (recommended) or Meta tag cut and paste.
Bing is a Microsoft web search engine, formerly Live Search and MSN Search, which also offers web services for webmasters.
Click the More Options link to see on each page to see.
There are plenty of browser extensions that will test the page you’re viewing in the W3C validators.
Browsers won’t care much either as they’ll typically render much invalid code perfectly fine. Still there are good reasons to validate your code.