Do you delete old posts?

I got an email another day from someone asking me to delete an old email. It was a review I wrote to a site that doesn´t exist anymore, so the link was broken.

I didn´t delete the post because I thought that this could not be a good thing for SEO. All my posts are archived and have been cached by search engines so it is not a good thing to make a post just disappear.

Anyway I like what I write. It doesn´t matter if I am writing about diet pills, colon cleanser or beauty products. I make researches, I pay attention to grammar, I spend my time writing my posts, so I don´t like to delete them.

Now, tell me what you do with old posts.