Should I spend time going back and optimizing old blog posts for SEO or just write new posts?

[SEO4leagalPA]

The site I manage (Boutique Estate Law Firm) has at least 350 old blog post archived that were not well optimized for SEO. Would it be valuable to go through and optimize those old posts or just write new optimized posts even though they are on the same subjects? My boss loves to churn out 300 word posts.

[MattRoney]

Honestly, maybe both? For me, it would depend on how useful those old posts are. Are they getting traffic? Are there valuable links pointing to them? If so, it may be worth it. If not, 301 redirect them to new, relevant, optimized posts.

For what it's worth, I also wouldn't recommend "churning out" blog posts unless they add value for your visitors.