My site was bouncing between page 1 and 2 on google for about a week before it disappeared completely from the ranks for that keyword. Why is that?what do I do?
I guess its because of the updates released by Google that is about Penguin that made your website disapper from the results, check the updates regularly to maintain the standards.
Because GOogle Sued You!!! Rofl Jokes apart, see which Google update made that happen was that an EMD update, recent penguin or panda update? And then align your SEO strategy from that.