In simple terms, Alexa Traffic Rank is a rough measure of a website’s popularity, compared with all the others out there on the internet, taking into account both the number of visitors and the number of pages viewed on each visit.
Alexa collects traffic data on a daily basis from millions of users who have installed the Alexa toolbar, and other sources, and then uses a complex mathematical formula on three months’ worth of data to arrive at the ranking for each site.
This can be interpreted as the website’s position in a massive league table based on both visitor numbers and the number of pages viewed by each visitor. The ‘most popular’ site is given a rank of [...]
PageRank (also known as PR) is a rating system from 1 to 10 used by google for every page on the internet – the higher your website’s PageRank the better. You can check your blogs PageRank by using this tool. http://www.prchecker.info/check_page_rank.php
PageRank does not go up in equal steps, for instance, PR2 is double a PR1, PR3 Is double a PR2 and so on, so going up from a PageRank of 1 to 2 isn’t hard, but going from a PageRank 5 to 6 is a huge task (as the below bar chart shows)
To give you an idea of general PageRank here is a small list of sites and their PRGoogle and Facebook PR10 Youtube and Twitter PR9 Asos and Ebay.co.uk PR6 Boohoo.com [...]