Link Checker Firefox Plugin

One of the great time savers in the Web 1.0 (and 2.0) universe is the “Link Checker” plugin for Firefox.
If you maintain any Web site at all and have a set of external links, this tool is a major godsend. Once you install it, you navigate to any page, then right click and select the Check Page command. Link Checker will hit all the links on that page and color code them for you.
Green highlighted links work; red links are broken; gray links are waiting for the server or are e-mail links; and yellow links are unknown. This will narrow down your problem areas very quickly.
You’ll still get broken-link e-mail messages, but hopefully not so many. Thank you kevinfreitas net!