Avoid Web Directories on Dropped Domains
Detecting a dropped domain it’s easy. First of all, if someone decides to setup a web directory, he would probably choose a name suggestive for this niche. Generally something containing: directory, links, submit, addurl, tree, etc.
Let’s take the following domains: pmdip.org, ascia2008.com, icca-2004.org.
What normal person would name his directory like this? So it’s very obvious the domain was used for something else before, then it expired and someone wanted to build a directory because of the Page Rank.
To be sure, you can always use Internet Archive to check what site was on a specific domain years ago.
Now once you detected such directories, avoid listing your site on them, even if they have a high pagerank, it will drop in a few days or weeks anyway.
Sooner or later Google penalizes dropped domains. Of course getting a link or two from such directories ain’t gonna do much harm, but when you get tens or hundreds, your own site may get penalized.
