crobb305 - 5:59 pm on Apr 20, 2011 (gmt 0)
7k daily isn't huge
The OP may have meant "huge amount" lost (90% is huge).
One of my website were getting appx 7k unique user a day and in just 4 days it is reduced to 700 user a day.
Are you saying this happened in the past 4 days, or over a 4 day period? What date exactly did the traffic drop by 90%?
When searching for your site name, I know you said you don't see it listed at the top, but do you find it deeper down (say page 5 or beyond)?