For all the great data that Google Webmaster Tools (GWT) offers, there are also some notable things missing. One that webmasters and search marketers have asked for is a way to track links over time. If you wanted a timeline of your inbound link counts from GWT, you had to chart them manually.

Until now.

Russ Jones of Virante has announced a new tool called glync that fills in that missing historical angle on your GWT link counts.

Glync Basic is a free Firefox plugin that integrates right into your Google Webmaster Center account and shows link data for the most recent 30 days. There’s also a paid version that tracks for 90 days and lets you add Yahoo link counts side-by-side (among other features).

While I haven’t tried it out yet myself, there’s no doubt this is a needed addition to any search marketer’s toolbox. You can read the glync announcement for more information, the download link, and a video showing how it works.

Related Topics: Google: Webmaster Central | SEM Tools

About The Author: Matt McGee is Search Engine Land's Executive News Editor, responsible for overseeing our daily news coverage. His news career includes time spent in TV, radio, and print journalism. His web career continues to include a small number of SEO and social media consulting clients, as well as regular speaking engagements at marketing events around the U.S. He blogs at Small Business Search Marketing and can be found on Twitter at @MattMcGee and/or on Google Plus. See more articles by Matt McGee