Blogging is tough. It's even tougher when you blog to keep people reading more of your content. In other words, when people (or search engines come to your site, you want to ensure that they are able to find other content that they might find interesting. The more great content they see, the more loyalty and community you'll develop.
Now, you could have your virtual assistant go through all of your posts and link them together, or you can do it an even easier way.