Nofollow is an HTML attribute value used to instruct search engines that a hyperlink should not influence the link target's ranking in the search engine's index. It is intended to reduce the effectiveness of certain types of search engine spam, there by improving the quality of search engine results and preventing spamdexing from occurring.(i.e when using this attribute the hypertext (link embeded in words)on that page will not be followed by search engines to consider it as an backlink from that website.)

PageRank is a numeric value that represents how important a page is on the web. Google figures that when one page links to another page, it is effectively casting a vote for the other page. The more votes that are cast for a page, the more important the page must be. Also, the importance of the page that is casting the vote determines how important the vote itself is. Google calculates a page's importance from the votes cast for it. How important each vote is is taken into account when a page's PageRank is calculated.

RSS Feeds are the syndicated information that are sent through RSS technology from websites to Internet users. Users can subscribe to feeds from a variety of websites, and then new information from those websites is sent directly to them through an RSS reader. It is similar to receiving e-mail. An RSS reader acts like an “inbox” for RSS feeds. Instead of having to check multiple websites for updates, the new information is located in one convenient place. The use of RSS feeds has increased as blogging has become more popular.

RSS is the format used for syndicating web content. The acronym stands for Really Simple Syndications, Real-time Simple Syndication or Rich Site Summary. RSS is a technology that allows websites to distribute new content to Internet users, without the user having the revisit the website. In essence, it is equivalent to a daily or weekly newspaper.

Someone who keeps a blog is a “blogger.”

A person who posts entries in blog is called a “blogger”

Bloggers- Bloggers is the blanket term for anyone that uses a blog to post information on topics that are of interest to them. Becoming a blogger is actually simpler than it might seem. As blogging has grown in popularity, many website offer platforms to quickly and easily create a blog.

Authoring a blog, maintaining a blog or adding an article to an existing blog is called “blogging”.

Blogging is a way of collecting links to webpages and sharing thoughts and ideas with people online.

A blog is basically a journal that is available on the web.A blog is a website in which items are posted on a regular basis and displayed in reverse chronological order. The term blog is a shortened form of weblog or web log.

To put it as simply as possible - a blog is a type of website that is usually arranged in chronological order from the most recent ‘post’ (or entry) at the top of the main page to the older entries towards the bottom.