A meta title is a short, often catchy phrase that summarizes a web page's content. It appears in the browser tab and search engine results pages (SERPs).
Web 2.0 is a term used to describe the web's transition from a place where documents are created and read to a place where people collaborate and create together.
White hat SEO is an ethical form of search engine optimization (SEO) which follows the guidelines and best practices for search engines to allow a website to rank higher in a search engine's results page.