How Do You Check If a Link is Nofollow?

    1.Download from here: http://moz.com/tools/seo-toolbar. ...
    2.Then click on "Add" when you see the prompt.
    3.To launch it you can either click on the little "M" icon in the top right of your browser or use the hotkey: CTRL + Shift + Alt + M.

There are simple ways to check a link as nofollow.

First, use Google chrome nofollow extension to check nofollow links & second check nofollow tag in the page source file.