I was hit by Panda 3.4 on 23 March 2012. We saw our traffic halve and it has remained around those levels ever since.
I recently did a landing page report in Google Analytics to see which pages were punished the hardest (>50%) and most of the pages are for older content that isn't really relevant to the site any more.
We've been in business for nearly 12 years now and obviously in that time we've done quite a lot of different things. We've tended to retain the older content on the assumption that it doesn't do any harm and there are old, established links to the content.
Is the assumption that older content doesn't do any harm still valid? Should I delete it?
The content that is still relevant I am about to undertake a program of sprucing up to increase its value, but I don't wish to spend time improving content I no longer need.
Your advice would be appreciate.