Crazy Egg allows website owners to create tests to figure out what people are doing on their website.
Olark is a lightweight tool to chat with visitors to your website using your existing instant messaging client. Visitors to your website appear as buddies on your Buddy list, their messages to you appear as IMs.
Google Tag Manager makes it easy for marketers to add and update website tags including analytics, remarketing, and more.
UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.
Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page.
Sites who has this tag are verfied by google to use WebMaster tools
The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.