I've got a site which was panda'd on or around 21st December 2012.
I've gone through the whole site deleting 'thin' pages, improving other pages and consolidating what could be considered duplicate content across the site. I've also added alot of new content, improved the structure / navigation and moved it to wordpress so all url's are changing. All this was done on a testing server and now I am ready to launch the new site.
The site is 9 years old, in a very competitive field & has always done well in google until recently. It still does very well in bing / yahoo. It has a lot of aged authoritative relevant backlinks which I'm reluctant to lose as they do bring quite good traffic, although there could be a problem with similar anchor text, plus quite alot of spammy weird stuff which I can only assume was a negative seo attempt by a competitor.
What I can't decide is whether to take the opportunity to move it to a new domain now (thinking the old domain could be tarnished in some way), and if I do, whether to 301 the old site to the new site, or whether to simply delete the old site and start fresh.
So my choices are
1) same domain, 301 old pages to new pages,
2) new domain, 301 old pages to new pages
3) new domain, no 301, simply delete old site.
Any thoughts would be appreciated.