Recently, I've blogged about 5 Great Reasons Why Archive.org’s Wayback Machine is a Great SEO Tool in Blueliner Marketing blog.

Here are the higlights of the article:

You can use Archive.org's Wayback Machine for SEO Diagnosis with WinMerge. The Wayback Machine gives you the historial site codes and WinMerge allows to to see the changes in codes.

Old links are good for SEO. If you want to age your current links, then the best place to find them is in the Wayback Machine.

If you want to troubleshoot all time links that are broken, you can use the Wayback Machine and Xenu’s Link Sleuth software to find them and then take measures for improving Usability as well as SEO.

Unique contents are the new King now. But, have you thought that you have created unique content earlier, and it is now residing in the Wayback Machine repository? Use them freely for inbound link building for your site. Use them as soon as possible, before the scrappers do.

For claiming copyright for your contents, you need a good evidence and the pages indexed in the Wayback Machine can ensure you exactly that.

Link Age and Domain Age are totally different things.

Domain Age denotes the age from the time when the site was registered (Source: WHOIS information).

Link Age denotes the age from the time the specific page/link was created (Source: Document Inception Date).

So, over time, you can have many new links in an old site.

Image Courtesy: SXC.hu - Free Stock Images Site

Domain age has significant influence in Google Rankings and it is proven. Old sites has been awarded with better ranking since 2005, as Google found that spammers evacuate site quite frequently.

But, many Search Engine Optimizers (SEOs) debate over the positive influence of "Link Age" in SEO. Many debate that Google likes fresh contents in old sites. So, for

Link Age

, this is somewhat inverse relation to positive SEO factors involving age. i.e. the newer the link age, the better the ranking.

Darren McLaughlin, in the Sootle Directory blog, mentioned the Google Patent using Document Inception Date for the freshness of links.

However, there are a great number of SEOs that believe that old links are better than new links. In their view, link age is also important as domain age. Again, it is also evident that Google punishes the pages that have not been updated for long time. However, in the view of these SEOs, the freshness of content in old link has more marketability than new links.