Hello SEO Experts,

I have one problem, I am working in leading IT Company related Web Design & Development.
I have been doing SEO since last more than 1.5 years.

I have noticed that my website was on 2nd before I have added footer links... but after adding to footer a link on my clients websites with proper anchor text (clients website pages are plus 30K) and out of that 20k links been crawling and losing rankings from 2nd to 6th rank...

can anyone guide me proper... how can I use footer links on my client side.

Looking for help from experts...

Thanks,