Many of us are now used to share long difficult to type URLs in the form of short URLs, but as these short URLs does not tell you about the hidden long URL hidden inside them before you and click them and check yourself, these short URLs can be dangerous some times to click.
View Thru is great extension which allows google chrome users to view the hidden long URLs inside the short URLs just by mouse hover, which means in order to reveal long URL hidden inside the short URLs.
This extension will expand short URLs and display the full URL as a tool tip over the short URL. It supports short URLs from bit.ly, cli.gs, ff.im, goo.gl, is.gd, nyti.ms, ow.ly, post.ly, su.pr and tinyurl.com etc.
For all those who are not using google chrome, can try this alternative way to reveal short URLs irrespective of the browser you are using.