Would just like to canvas opinion on something. We have a website that had good page 1 rankings which has now dropped severely in April around the dates of penguin and panda refreshes. We have taken action on anything that could be panda related. However, I feel previous domains this site used which have over optimised anchor text backlinks are 301 redirecting to this new domain and passing a penguin problem.
We want one of these domains to forward to the current troubled site because its still 'known' and used a little so we should forward it without a 301 in my opinion. How would you suggest this can be done, URL forwarding?