No piece of software is perfect. There are a number of known limitations which will hopefully be fixed in future versions.

1. Problems can arise if there are multiple blogs installed on a domain all using Wordpress Link Cloak. This issue comes from how the software handles the htaccess in the public_html directory file
2. If you’re using permalinks with the same structure as your cloaked links issues will arise if the cloaked page has the same name as a post or page. (For example, if you have a post titled “Azoogle” and then a cloaked page named “azoogle” a conflict will arise)

Migrate All Posts by Replacement is an ingenious feature to help users migrate from their old system of cloaking affiliate links.

Say, for example, you used to manually link the keywords “Azoogle Ads” to /go/azoogle.php
That could very well be a lot of links that aren’t using Wordpress Link Cloak to disguise your affiliate urls. What “Migrate All Posts by Replacement” does is go through all your old posts and finds the keywords “Azoogle Ads” and replaces them even if they’ve already been previously linked.

Of course, this system isn’t perfect, and we recommend that you backup your database beforehand, and then browse through your site to verify everything is working fine.

Link cloaking can have negative connotations, and how Google describes cloaking (“Cloaking refers to the practice of presenting different content or URLs to users and search engines”) is not what Wordpress Link Cloak does, therefore it will have no effect on your search engine rankings. Your URL’s are simply rewritten and redirected - nothing shady here!