What to do about my lost SERPS?

[tonerman]

When we implemented Google Analytics in January GA had a bug that would cause it to lose a visitor's activity if they went from a www. to a non www link. With a lot of pages and links on our website written both ways we needed to have all links standardize on either www or non-www urls. We were reassurred that if we did a correct 301 using mod-rewrite properly our pages would retain their current PR and SERPs.

We decided to go non-www because most people looked for us that way and we thought that with the proper 301 redirect everything would be fine. Unfortunately it didn't work out that way. To complicate matters, as the result of an oversight in our robots.txt file failing to disallow our /cgi-local/ directory Google indexed a lot of non-www product pages with different session id data creating a lot of duplicate pages - hundreds.

We've followed all the Google guidence for our robots.txt file to remove the duplicate dynamic urls - namely disallowing /*? We've recovered our Pagerank of 4 in the past couple of weeks but most of our product pages that disappeared with high rankings in the SERPS are still missing.

We have a plan HTML site map with static links to all URLS, we implemented a Google Sitemap properly months ago and automatically update it and notify Google whenever we make changes. We have a correct robots.txt file. We selected non-www as our index preference a few months ago in Google Site Maps. We have created a links page and we are now actively seeking a few carefully selected link exchanges within our industry. We are going to implement what we think will be a good blog in a few weeks to pursue viral links to our site. Not much else we can do.

We have never had a lot of backlinks because our most important pages ranked very high in the SERPS and didn't seem to need them.So there is a possibility the Big Daddy update didn't see many backlinks and blew a lot of pages out of the SERPS independent of all of the above. Just don't know.

All our old www pages show the correct PR, page count and backlinks when I check with McDar's Google Quick Check tool - 313 pages and 7 backlinks. Using the same McDar tool the non-www site shows an average of 1300 pages and the same PR and backlinks.

Now for the question. Do you think we should we stick with trying to recover our SERPs with our 301 redirects, planned blog site, careful backlink campaign and fairly recent robots.txt disallow statements to eliminate the duplicate pages, or should we throw in the towel and go back to www urls with all that entails?