Here’s an easy way to search for copies of your content anywhere on the web: take the URL of your content and plug it into Copyscape. It will display all the instances where a substantial amount of your content has been published. This is a very useful service for anyone

A service from seomoz.org, OpenSiteExplorer is a free link popularity checker and a backlinks analysis tool. You can get data on up to 1,000 links and unlimited use for free. You can choose to show only followed, non-followed or 301 redirects, links from internal or external pages only, and also

If you have large documents on your site (incl. books), and you don’t want to make them available as a separate download, you could have them displayed in a browser instead. FlexPaper is an open source web based document viewer that uses Flash. It is delivered both as a stand

To get statistic on all kinds of facts from around the world, check out the CIA’s World Fact Book. The World Factbook provides information on the history, people, government, economy, geography, communications, transportation, military, and transnational issues for 266 world entities. The continuously updated site also includes pictures, flags, maps

The Spamhaus Project tracks the internet’s spam senders and spam services and makes available blocklists (free for low usage) to filter your e-mail. Before you set your e-mail servers to use Spamhouse’s blocklists, be sure to check their usage terms to see if you qualify for free use. If you

Another great set of free social media icons! Pink Moustache offers this free social icons vector set, which consists of 16 popular icons, available in both vector and PNG (64×64 pixels) format. Related posts: Pack of 3D Social Media Icons Elegant Social Media Icons Simple And Clean Social Media Icons

As a designer you can never have to many social media icon options. Dawg House Designs Studio has prepared a beautiful set of 3D social media icons. The 3D Social Media Icon Pack comes with 20 icons which include your favorite social media websites such as Digg, StumbleUpon, Twitter, LastFM,