fred9989 - 9:56 am on May 31, 2012 (gmt 0)
This morning I've noticed that my results have disappeared for longtail keywords/product names. I was ranking in the top 1-5 spots for over 100 products and now nothing. My company isn't even coming up on page1.
Try typing in the verbatim text of the meta title of a page on your site - if the page doesn't appear in the top 100 results, it's almost certainly penalised.