To learn more about how popular a website is, how much traffic it gets and how many external sites link to it, you have to log on to a whole variety of different web sites. However, there is a new site called Dataopedia.com, that was launched this month, and it will make this information more easily attainable. Dataopedia.com has been designed as a one-stop-resource for finding website facts, and the service can be accessed via the website, the mobile site, embeddable widgets for your website, and browser add-ons. This new website collects data from more than 50 sources and is an is an aggregation service that lets its users find out all the valuable facts about any website, such as traffic, online buzz, contact information, popularity in social bookmarking services etc. 

Here is a more detailed example of the type of information that you will get when you enter a website name into the search box: Alexa traffic rankings for one month and 3 months, countries where visitors are logging on from, page views per day, website popularity on websites such as Digg and Delicious, Twitter entries, Technorati listings, Google news reports, website owner information and you are able to leave comments about the website. 

It is a good tool with very interesting information, it enables you to get a feel for how successful your competitors are and it may be useful for advertisers to get a sense of whether or not they should advertise on a website.