I recently (last month) had my website redone by a web developer. The site had been difficult to navigate. The site is ecommerce using oscommerce software. The site now is using the newest version of oscommerce and has had the URLs made to reflect the products sold, rather than random numbers. At first the site was doing very well. First page for my search terms for most products. Then, all of a sudden, all the pages vanished from the SERPS. I'm trying to figure out what happened. The only things that had been done just prior to this was the site had to be newly verified in GWT (added a special html page to do that). Also, there were some issues with the site automatically updating the sitemaps daily to all the search engines. Some script change needed to be done. GWT indicated my sitemap disappeared, so had that fixed. Also, in order to keep the old links pointing to the newly designed site, an automatic 302 redirect was put into place to the home page. The new site makes it very easy to find any of the products from the old links, so the developer thought that would be the easiest way to keep my customers. But perhaps I need to do the 301 permanent redirects instead. Can anyone see any clues as to why my site disappeared? The site is still there if you type in the site name, but you can no longer find my pages using my search terms.