World Wide Web Consortium (W3C) is a markup validation service website that allows internet users in this search engine, to check HTML and XHTML markup document is well formed. Validation of markup is an important step to ensure the technical quality of a web page or blog, as it related to the SERP (Search Engines Result Page).To use this service, please visit the W3C at http://validator.w3.org/ address, then enter the address of the blog buddy, click the check or just hit Enter and see the results.
