Extend This Simple SEO Wordpress Plugin

I need to extend the attached Wordpress plugin. Currently, it has some flaws that I feel can easily be fixed. The .php file is extensively commented so finding a solution the my problems should not be difficult. To sum everything up the problems that need to be fixed are: 1) There should only be one occurrence of a link on a page (FIXED, no more coding needed) 2) Add the ability to add attributes such as "title" tags (FIXED, no more coding needed) 3) A link on a page should not be linking to the page that it is on (STILL NEEDS WORK, coding still needed) More details in the "deliverables" section. ## Deliverables Background on the plugin: I've attached the [login to view URL] file for you to review, as well as the NEW UPDATED v.1.10 KB Linker plugin. The purpose of the plugin is to link to certain pages when a keyword is found on page. My problems: Problems 1 and 2 have been addressed by a coder. However, problem 3 still remains. I don't want pages containing links that link to itself. So if the page [login to view URL] should not contain a link that points to [login to view URL] I want there to be a checkbox in the plugins option/admin that says "Check if you want omit URL where link is found from being linked to" where users can turn this feature OFF by checking the box. 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Wordpress 2.0+ Current version 2.23