If you are contemplating filing a lawsuit against ComplaintsBoard.com, you should think long and hard about the repercussions. First of all, for the most part the administrators and owners of the website are immune to civil legal liability for defamation as a consequence of a US law, namely, section 230 C of the medications decency act.
Free do-it-yourself resources to help remove defamation from Google search results:
Visit defamation91.org for free help and tips.
Professional help for victims of online defamation through ComplaintsBoard.com
If you are a business or individual who can afford professional assistance, simply enter your name, brand, or other phrase that is being defamed in Google search results: