I have a site that used to average 200 - 490 unique visitors per day (with about 80% of this coming from organic SEO) in December 2011.
I turned it back on in the last week or so, and, (as you would expect) the SEO and number of unique visitors has reduced by approximately 90%. The search phrases that the site used to rank for - it does no longer. Infact, it's barely even ranking for it's own name since relaunching the site.
So far I have:
Google Webmaster Toolsand submitted the sitemap to Google for indexing.
Eliminated a few of the errors found by
Google Webmaster Tools(some of the URLs have changed slightly, so I wrote some
mod_rewriterules to fix this.)
Ensured that the site is now on a fast, reliable and stable server.
The domain name has stayed the same and the site has retained 80% - 90% of the content that it previously had.
What can be done (if anything) to 'restore' the SEO that the site used to have?
Thanks in advance.