Hi My site is www.kelleyfurniture.com. We have been in business for 6 years and always did well in the search engines until recently.

I see numerous changes in our rankings . For example, we used to rank well for our products, Now we seem to rank better off the home page, now that has been reduced as well. Our Page rank which was PR8 2 years ago is now PR6.

Many of our popular search terms such as bedroom furniture and bedroom sets have been moved to the 12th page or beyond.
Can anyone offer me insite as to why our rankings had such a huge drop, not just a fluctuation but a drastic drop. I am unsure wether or not there is a penalty imposed or if it becuase my site uses asp?
Should I switch shopping carts to a solution that offers search engine friendly urls? Or is there a penalty? its hard to tell. Thank You